Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technology price » technology rich, technology voice, technology service
1 communications » 10 communications, 14 communications, 1 communication
inflation state » inflation starts, inflation rate, simulation state
des l'afrique » de l'afrique, de l'amerique
state trade » states trade, states traded, slave trade
trade 1 » trade _, trade a, trade 4

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

• Adding a wildcard symbol may retrieve word variants: technology price inflation state trade 1 communications costs _ developpement des l'afrique.*.