Perhaps you should try some spelling variations:
communications convention » communications connections, communication connection, communication conversation
david parsons » dari parsons, david pearson
david carlson » david calvin, david pearson
david matson » david pearson, david machin, david main
basic linear » quasi linear, basic life

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

• Performing a fuzzy search may retrieve terms with similar spellings: communications convention ((((david parsons) OR (david matson))) or (david carlson)) basic linear~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communications convention ((((david parsons) OR (david matson))) OR (david carlson)) basic linear.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communications convention ((((david parsons) OR (david matson))) or (david carlson)) basic linear".
• Adding a wildcard symbol may retrieve word variants: communications convention ((((david parsons) OR (david matson))) or (david carlson)) basic linear*.