Class code for particular Method:
 public pagereference SearchManifests(){
        string sProjName = MAdminRecTemp.Project_Name__c;
        string sProjIteration = MAdminRecTemp.Project_Iteration__c;
        string sStory_Issue = MAdminRecTemp.Story_Issue__c;        
        string soql = 'select id, name,Project_Name__c,Project_Iteration__c,Story_Issue__c,Comments__c,CreatedDate  from Manifest_Administration__c';
        string sSearchSpecAdditional = ' where RecordTypeId !=\''+sRecTypeId+'\''; // get only Dev To QA Manifests
        
        if(string.isNotEmpty(sProjName)){
            sSearchSpecAdditional += ' AND Project_Name__c = \''+sProjName+'\'';
        }
        if(string.isNotEmpty(sProjIteration)){
            sSearchSpecAdditional += ' AND Project_Iteration__c = \''+sProjIteration+'\'';
        }        
        if(string.isNotEmpty(sStory_Issue)){
            sSearchSpecAdditional += ' AND Story_Issue__c = \''+sStory_Issue+'\'';
        }
        soql = soql + sSearchSpecAdditional;
        
        MAdminSearchResults = new list<Manifest_Administration__c>();
        MAdminSearchResults = database.Query(soql);
        wrapMAdminSearchResultList = new list<wrapManifestAdminRecord>();
        for(Manifest_Administration__c ma : MAdminSearchResults){
            wrapMAdminSearchResultList.add(new wrapManifestAdminRecord(ma));
        }        
        bAddbtnDisable = (wrapMAdminSearchResultList !=null && wrapMAdminSearchResultList.size()>0 ? false : true);
        ClearSearchFields();
        return null;
    }

My Test class:

@isTest
public class INTC_ManifestAdminNew_CXTest
{
    public static testMethod void Test_INTC_ManifestAdminNew_CX()
     {
      
      String strRecordTypeId = [Select Id From RecordType Where SobjectType = 'Manifest_Administration__c' LIMIT 1].Id;
      
      Test.StartTest();
     //create new Manifest Administration Record
     Manifest_Administration__c ma=new Manifest_Administration__c(Project_Name__c = 'Customer First - Release 1',Project_Iteration__c = 'Sprint 2',
                                                                  Story_Issue__c = 'Prod Migration',
                                                                  Comments__c = 'Test',RecordTypeId=strRecordTypeId);
     insert ma;
     
       List<Manifest_Item__c> MI=new List<Manifest_Item__c>();
       Manifest_Item__c mit=new Manifest_Item__c();
       mit.Manifest_Name__c=ma.id;
       mit.Metadata_Item_Name__c='CRM Developer';
       mit.Metadata_Type__c='Profile';
       
       insert mit;

     ApexPages.StandardController controller = new ApexPages.StandardController(ma);
     INTC_ManifestAdminNew_CX MANC=new INTC_ManifestAdminNew_CX (controller);
     system.assert(MANC != null); 
     INTC_ManifestAdminNew_CX.wrapManifestAdminRecord Wrapvar = new INTC_ManifestAdminNew_CX.wrapManifestAdminRecord (ma); 
           
     MANC.SearchManifests();
     MANC.ClearSearchFields();
         
     MANC.AddRecords();
     MANC.RemoveSelectedSearchRecords();
     MANC.BuildPackage();
     MANC.RemoveSelectedAddedRecords();
     Test.stopTest();
     }
}

If i comment the method for Search Manifests it is covering 33%


Please anyone help me to cover this method