Perhaps you should try some spelling variations:
communication telecommunication » communications telecommunications, communication communication, communications communication
telecommunication fast » telecommunication systems
extraction based » extraction a
fast extraction » dust extraction, root extraction, defect extraction
based libre » based fibre, based fibres, based timbre

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication telecommunication fast extraction based libre~.
• Adding a wildcard symbol may retrieve word variants: communication telecommunication fast extraction based libre*.