Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
oral communication » personal communication
development sahara » development sarawak, development saber, development sierra
information iii » l'information iii, information im, information i
3.1 development » 2 development
technologie c » technologies 2, technologies 3, technologies 1
c information » 2 information, 1 information, 10 information
sahara africa » saharan africa, saharan african, saharan africa's
cost 3.1 » cost 3.2, cost 3.4, cost 3.5
1 oral » 10 oral, 14 oral, 16 oral
iii 1 » iii _, ii 1, iii 2

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

• Adding a wildcard symbol may retrieve word variants: technologie c information iii 1 oral communication cost 3.1 development sahara africa.*.