Q:

Search only on User profile properties

I created a custom people search, with custom user profile properties. Everything works OK in the search unless it sometimes shows a "wrong" result.
When I search "John", I also get other users who don't have any user profile properties that contain John. (for example Ruben)
I guess that has to do with the search itself (phonetic search, documents they worked on together,...)
So is it possible to let my people search ONLY search in the user profile properties?
--- Update ---
Is it possible I need to change the xml/xsl in
Central Administration > Manage service applications > Search Service Application > Federated Locations > Federated Locations > Edit location > Display Information

A:

I was almost correct in the update above...
First go to:
Central Administration > Manage service applications > Search Service Application > Federated Locations > Federated Locations > Edit location >  Location Information > Query Template
And add all the properties you want to search on after the value {searchTerms}.
In my case this was:
{searchTerms} AND (FirstName:{searchTerms} OR LastName:{searchTerms} OR Initials:{searchTerms} OR Company:{searchTerms} OR Department:{searchTerms})

