Perhaps you should try some spelling variations:
communication costa » communication costs, communications costs, communication cote
integration water » integration after, integrating water, integration peter
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
del developpement » de developpement, des developpements, le developpement
4.2 integration » 2.2 integration, 3.2 integration, 5.2 integration
developpement l » developpement il, developpement la, developpement de
technology 4.2 » technology 2.2, technology 3.2, technology 4.1
water trade » after trade, paper trade
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
costa del » costo del, costa e, cose del
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 4.2 integration water trade 6.2 communication costa del developpement l afrique.*.