Perhaps you should try some spelling variations:
virtual library » virtual laboratory
visual library » visual literacy, visual lidar, israel library
asio library » asic library, basis library, basic library
gson library » open library, own library, town 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 ((((asio library) OR (((((visual library) OR (visual binary))) OR (virtual library))))) OR (gson library))%22.
• Adding a wildcard symbol may retrieve word variants: %22theory and ((((asio library) or (((((visual library) or (visual binary))) or (virtual library))))) or (gson library))%22*.