Perhaps you should try some spelling variations:
insulation factor » inspiration factor, population factors, education factor
technology trade » technology trends, technology transfer, technology transfers
trade insulation » trade regulation, grade inflation, trade innovation
de communication » mobile communication, online communication
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
prices de » prices does, prices _, prices a
l afrique » en afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology trade insulation factor prices de communication costs a developpement l afrique.*.