Perhaps you should try some spelling variations:
opec communication » open communication, optic communication, ec communication
does development » dams development, ides development, smes development
development il » development ii, development iv, development ix
variation es » variation des, variation test, variations des
il afrique » l afrique, en afrique
die opec » die open, die oper, die opfer
a does » 2 does, 4 does, 1 does

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation es die opec communication a does development il afrique.*.