Perhaps you should try some spelling variations:
oral communication » personal communication
communication pt » communication 3, communication 1, communication 2
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
typologie minor » typologie eines, typologie einiger
minor variation » minor irrigation, color variation, gender variation
variation among » starvation among, formation among, variation von
among does » among boys, among les, among donors
does oral » does formal, does oil
pt de » et de, pt d, pt e

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

• Adding a wildcard symbol may retrieve word variants: typologie minor variation among does oral communication pt de developpement en afrique.*.