Perhaps you should try some spelling variations:
communication basics » communication basic, communications basic, communication mosaics
basics dimensions » basic dimensions, physics dimensions, based dimensions
chapter 2i » chapter 2, chapter 20, chapter 22
chapter 21 » chapter 2, chapter 11, chapter 20
chapter 1 » chapter 2

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication communication basics dimensions ((chapter 2i) or (((chapter 21) OR (chapter 1))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication communication basics dimensions ((chapter 2i) OR (((chapter 21) OR (chapter 1))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication communication basics dimensions ((chapter 2i) or (((chapter 21) OR (chapter 1))))*".