Perhaps you should try some spelling variations:
personal communication » interpersonal communication
techniques computer » techniques chapter
study personal » study regional, study terminal, today personal
interaction i » interaction ai, interaction ii, interaction _
4 developing » 3 developing
developing a » developing _
a afrique » l afrique, en afrique
i study » 2 study, 3 study, 4 study
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: techniques computer interaction i study personal communication costs 4 developing a afrique.*.