Perhaps you should try some spelling variations:
communications costly » communications costs, communication costs, communication costa
trade development » software development
technologies der » technologies de, technologie der, technologies under
information gaps » information gap
der information » insider information, sector information, labor information
costly trade » costs trade, country trade, costly than
a afrique » l afrique, en afrique
gaps do » games do, gaps how, gaps vom

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

• Adding a wildcard symbol may retrieve word variants: technologies der information gaps do _ communications costly trade development a afrique.*.