Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developing african » developing africa's, developing asian, developing america
technologies 2 » technologies _, technologies 4
information 2 » information 3
keep personal » der personal, de personal, des personal
4 developing » 3 developing
african ict » african rice, africa's ict, african giant
costs 4 » costs _, costs a, costs 4.2
2 keep » _ keep, 1 keep, 3 keep

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 2 keep personal communication costs 4 developing african ict.*.