Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
change interactions » exchange interactions, range interactions, changing interactions
iran communications » iraq communications, oman communications, france communications
technology change » technological change, technological changes
interactions e » interactions de, interactions et, interactions _
developing en » developing e, developing eq, developing egg
a developing » a development
costs a » costs _, costs 4
e data » e datas, age data, cge data

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

• Adding a wildcard symbol may retrieve word variants: technology change interactions e data iran communications costs a developing en afrique.*.