Perhaps you should try some spelling variations:
development countries » developing countries, developed countries, development congresses
technology support » technology sector
oral communication » personal communication
support education » supported education, support educational, supply education
countries africa » countries april, industries africa
60 development » 20 development, 10 development, 6.10 development
costs 60 » costs 20, costs 6.4, costs 168
2 oral » _ oral, 4 oral
2.1 2 » 2.1 _, 2.1 a, 2.1 l

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

• Adding a wildcard symbol may retrieve word variants: technology support education 2.1 2 oral communication costs 60 development countries africa.*.