Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation based » documentation fast, documentation a, documentation center
based discussion » brief discussion
discussion why » discussion what, discussion _, discussion a
why layer » phy layer, why labor

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 based discussion why layer~.
• Adding a wildcard symbol may retrieve word variants: communication documentation based discussion why layer*.