Perhaps you should try some spelling variations:
efficient communication » effective communication
trade development » software development
technologies 1 » technologies _, technologies 4, technologies 2
development il » development ii, development iv, development ix
1.3 efficient » 3.3 efficient, 6.3 efficient, 11 efficient
il afrique » l afrique, en afrique
table 1.3 » table 1.1, table 1.2, table 6.3

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information table 1.3 efficient communication a trade development il afrique.*.