Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication costa » communication costs, communications costs, communication cote
developing based » development based, developing asia, developing east
technologies 1 » technologies _, technologies 4, technologies 2
information 2 » information 3
based optimal » based primal, based option, area optimal
3 developing » 3 development
de personal » der personal, des personal, de persona
costa 3 » costa e, costa p
2 de » 2 die, 2 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information 2 de personal communication costa 3 developing based optimal.*.