Perhaps you should try some spelling variations:
virtual library » virtual laboratory
vision library » design library, vision linear, visual library
gson library » open library
town library » open library
own library » open library

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %22theory AND ((((vision library) OR (((virtual library) OR (visual binary))))) OR (((((gson library) OR (town library))) OR (own library))))%22.
• Adding a wildcard symbol may retrieve word variants: %22theory and ((((vision library) or (((virtual library) or (visual binary))))) or (((((gson library) or (town library))) or (own library))))%22*.