Perhaps you should try some spelling variations:
developing colonies » developing economies, developing policies, developing countries
oral communication » personal communication
technology heimat » technology eimt, technology human, technology help
heimat nationalen » heimat nationale, im nationalen, einer nationalen
colonies africa » colonial africa, economics africa, colonial america
4 developing » 3 developing
costs 4 » costs _, costs a, costs 4.2
und ca » und car, und cat, und co

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

• Adding a wildcard symbol may retrieve word variants: technology heimat nationalen und ca oral communication costs 4 developing colonies africa.*.