Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
calculations phase » calculations charge, calculations based, calculations chapter
index africa » andes africa, india africa, index asia
a mobile » _ mobile
phase a » phase 1, phase _, phase 2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies _ calculations phase a mobile communications costs a development index africa.*.