Perhaps you should try some spelling variations:
personal communication » interpersonal communication
variation studies » valuation studies, evaluation studies, variation series
parte development » arts development, care development, late development
communication 1 » communication _, communication a, communication 3
development en » developpement en, development menu, development eco
data personal » das personal, yana personal, dream personal
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
1 parte » 1 part, 1 parts, 2 parte

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation studies data personal communication 1 parte development en afrique.*.