Perhaps you should try some spelling variations:
population structure » production structure
overall population » rural population, general population
communication cote » communication costs, communication costa, communication case
la developpement » le developpement, de developpement, et developpement
developpement de » developpement des, developpement durable
structure three » structure theme, structure through, structure theory
3 communication » 4 communication, de communication, data communication
de afrique » de l'afrique, en afrique, l afrique
three 3 » three _, three 6, three a
cote la » contre la, compte la, cote les
method » methods

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

• Adding a wildcard symbol may retrieve word variants: method overall population structure three 3 communication cote la developpement de afrique.*.