Perhaps you should try some spelling variations:
communication second » communications second, communication section, communication sound
method extensions » methods extending
second method » secant method, section method
array sharing » arrays bearing, array imaging, way sharing
array string » array strong, arrays strings, array forming

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

• If you are trying to use Boolean operators, they must be ALL CAPS: communication second method extensions ((array sharing) OR (((array string) OR (array format))))~.
• Adding a wildcard symbol may retrieve word variants: communication second method extensions ((array sharing) or (((array string) or (array format))))*.