Perhaps you should try some spelling variations:
communication works » communicating works, communication world, communication networks
calculations based » calculations area, calculations phase, regulations based
united development » limited development, site development, uneven development
development model » development models, development middle
de communication » mobile communication, online communication
technologies 1 » technologies _, technologies 4, technologies 2
1 calculations » _ calculations, 2 calculations, 9 calculations
works united » work united, workers united, works cited
based 2 » based na, based pd
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 calculations based 2 de communication works united development model afrique.*.