Perhaps you should try some spelling variations:
communication cross » communication across, communication case, communication circuits
communication cost » communication case, communication control, communication concepts
bases solving » games solving, hales solving, tasks solving
faces solving » games solving, hales solving, surfaces solving
nuclear gibbs » nuclear genes, nuclear bombs, nuclear disks

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication cost) OR (communication cross)) ((bases solving) or (faces solving)) nuclear gibbs~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication cost) OR (communication cross)) ((bases solving) OR (faces solving)) nuclear gibbs*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((communication cost) OR (communication cross)) ((bases solving) or (faces solving)) nuclear gibbs*".