Perhaps you should try some spelling variations:
virtual library » virtual laboratory
visual library » visual literacy, visual binary, visual lidar
gson library » open library, own library
town library » own library, open library

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 ((((visual library) OR (virtual library))) OR (((gson library) OR (town library))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22theory and ((((visual library) or (virtual library))) or (((gson library) OR (town library))))%22".
• Adding a wildcard symbol may retrieve word variants: %22theory and ((((visual library) or (virtual library))) or (((gson library) OR (town library))))%22*.