Perhaps you should try some spelling variations:
4.6 communication » 4.1 communication, 7.6 communication, 11.6 communication
coil interaction » soil interaction, cell interaction, social interaction
interaction term » interaction _
de developpement » sme development
developpement la » developpement de, developpement et, developpement du
technology coil » technology cost, technology code, technology choice
term prices » term price, term process, farm prices
prices 4.6 » prices 4.2, prices 4.9, prices 6.6
la afrique » l afrique, la fabrique, en afrique
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology coil interaction term prices 4.6 communication costs de developpement la afrique.*.