Perhaps you should try some spelling variations:
vertical communication » verbal communication, virtual communication, optical communication
skill development » skills development, social development, rural development
development notes » developments notes, development note, development cote
4.1 information » 3.1 information, 2.1 information, 6.1 information
information gdp » information gap, information gaps, information guide
technology 4.1 » technology 3.1, technology 2.1, technology 1
from vertical » from virtual, from critical, from medical
notes africa » rates africa, zones africa, does africa
gdp from » gap from, up from, map from

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 information gdp from vertical communication _ skill development notes africa.*.