Perhaps you should try some spelling variations:
population structure » production structure
structure process » structured process, structuring process, structure property
3.2 communication » 3 communication, 2.3 communication, de communication
technology ties » technology tieups, technology studies, technology thesis
ties population » u.s population, les populations, nations population
a developing » a development
developing a » developing _
process 3.2 » process 2.2
a afrique » 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 ties population structure process 3.2 communication costs a developing a afrique.*.