Perhaps you should try some spelling variations:
voice communications » mobile communications, guinea communications, online communications
communications costs » communication costs, communications _
technologies trade » technology trade, technologies case, technologies table
trade information » price information, private information, trade integration
3.3 developing » 4 developing, 2 developing, 1 developing
information 3 » information 2
developing 2 » developing _, developing a, developing e
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
2 areas » 1 areas, 2 areal, 4 areas
3 aids » _ aids, 3 aims

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

• Adding a wildcard symbol may retrieve word variants: technologies trade information 3 aids voice communications costs 3.3 developing 2 areas.*.