Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
areas development » area development, arts development, markets development
variation rate » variation data, variation aware, variation notes
development en » developpement en, development menu, development eco
ideologie der » ideologie und, typologie der
der variation » de variation, does variation, die variation
des verbal » des verbalen, des verbs, models verbal
rate des » rate does, rates des, rate debts
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: ideologie der variation rate des verbal communication a areas development en afrique.*.