Perhaps you should try some spelling variations:
oral communication » personal communication
cost information » postal information, about information, asset information
data development » delta development, doha development, data envelopment
development rate » development create, development route, development water
technology cost » technology case, technology can, technology choice
rate africa » rates africa, rates aafrica, trade africa
costs data » cost data
2 oral » _ oral, 4 oral
gap 2 » gap _, gap 4, gap a

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

• Adding a wildcard symbol may retrieve word variants: technology cost information gap 2 oral communication costs data development rate africa.*.