Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation fast » conversion fast, conversation part, conversation post
fast extraction » dust extraction, root extraction, defect extraction
based libre » based fibres, based timbre, based life
based fibre » based fire, bast fibre, based fiber

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversation fast extraction ((based libre) OR (based fibre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication conversation fast extraction ((based libre) OR (based fibre))".
• Adding a wildcard symbol may retrieve word variants: communication conversation fast extraction ((based libre) OR (based fibre))*.