Perhaps you should try some spelling variations:
technology transfers » technology transfer
trade development » software development
2 communication » 3 communication, 4 communication, 1 communication
transfers from » transfer from
development de » development d, development ds, developpement de
targets while » target while, targets whole, targets where
from targets » from large, drug targets, term targets
de afrique » de l'afrique, en afrique, l afrique
while 2 » while _, chile 2, while a

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

• Adding a wildcard symbol may retrieve word variants: technology transfers from targets while 2 communication _ trade development de afrique.*.