Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
trade development » software development
technology have » technology hard, technology has, technologies have
have inflation » wage inflation, age inflation, has inflation
development de » development d, development ds, developpement de
inflation als » inflation a, inflation auf, inflation rates
costs trade » costly trade
de afrique » de l'afrique, en afrique, l afrique
als case » als care, goals case, sales case
case 4.1 » case 4.2, case 1

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

• Adding a wildcard symbol may retrieve word variants: technology have inflation als case 4.1 communication costs trade development de afrique.*.