I need to enable search in SharePoint document library using managed properties in advanced search options.

So I created site column called REFNO and added to certain document library then I created managed prosperity which mapped to the REFNO crawled property.

I updated the XML file to show the new managed property in advanced search options

Now when I search using this managed property I get result but when I try to search using the OR operator just I get one result  like this   ( REFNO=1  OR REFNO=2)

If I search without OR   I get one result   

I tried predefined columns in advanced search like   (filename: x OR filename: 2) I get two results

The issue just happened with my custom managed properties

did anybody experience this issue ?

tha