Perhaps you should try some spelling variations:
information officers » information services
oral communication » personal communication
communication cost » communication costs, communication costa, communications costs
4.2 development » 3.2 development, 2.3 development, 1 development
technologies 3 » technologies _, technologies 4, technologies 2
3 information » 1 information
officers 2.5 » office 2.5, officers 3.9, officers _
2.5 oral » 4.5 oral
cost 4.2 » costs 4.2, cost 3.2, cost 1.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 information officers 2.5 oral communication cost 4.2 development 1 africa.*.