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