Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
information from » information flow, information flows
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
technology 1 » technology _
from prices » from price, from process, farm prices
barriers de » barriers d, barriere der, barriers key
prices 3.5 » prices 3.1, prices 3.2, prices 7.5
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information from prices 3.5 communication barriers de developpement l afrique.*.