Perhaps you should try some spelling variations:
communication concepts » communication circuits, communication congresses, communication channels
communication control » communication culture, communication channel, communication cross
dispersion carrier » dispersion martinez, dispersion after, dispersion chapter
post dispersion » point dispersion, pulse dispersion, gas dispersion
carrier probing » carrier profling, carrier profiling, carrier proteins

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication control) OR (communication concepts)) post dispersion carrier probing~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((communication control) OR (communication concepts)) post dispersion carrier probing".
• Adding a wildcard symbol may retrieve word variants: ((communication control) OR (communication concepts)) post dispersion carrier probing*.