Perhaps you should try some spelling variations:
communication international » competition international, publication international
communication information » communication education
first extendible » first extensive, first extension
extendible array » extendible graph
array strong » array string, array sharing, norway strong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication information) OR (communication international)) first extendible array strong~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((communication information) OR (communication international)) first extendible array strong".
• Adding a wildcard symbol may retrieve word variants: ((communication information) OR (communication international)) first extendible array strong*.