Perhaps you should try some spelling variations:
visual library » virtual library, visual literacy, visual lidar
asio library » asic library, basis library, basic library
gson library » town library
open library » opencv library, chosen 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 (((gson library) OR (((own library) OR (open library))))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22theory and ((((asio library) or (((visual library) or (visual binary))))) or (((gson library) or (((own library) OR (open library))))))%22".
• Adding a wildcard symbol may retrieve word variants: %22theory and ((((asio library) or (((visual library) or (visual binary))))) or (((gson library) or (((own library) OR (open library))))))%22*.