Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation first » documentation fast, documentation from, documentation forms
first impression » first impressions, first session
impression data » compression data, expression data, expressions data
data unit » data unbist

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 first impression data unit~.
• Adding a wildcard symbol may retrieve word variants: communication documentation first impression data unit*.