Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation basics » documentation basic, documentation based, documentation asia
extensions brauer » extensions based, extensions frame, extensions ruler
extensions failed » extensions based, extensions cayley, extensions faster

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication documentation basics ((extensions brauer) or (extensions failed)) lima~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication documentation basics ((extensions brauer) OR (extensions failed)) lima.
• Adding a wildcard symbol may retrieve word variants: communication documentation basics ((extensions brauer) or (extensions failed)) lima*.