Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
south communications » mouth communications, month communication, truth communication
development policies » development policy, development projects
power development » water development, career development, hydropower development
technology race » technology rate, technology role, technology rich
race relations » trade relations
relations 2.4 » relations 2.1, relations 2.5, relations 3.4
costs power » cost power, costs per, costs peter
dipp south » deep south, did south, die south
2.4 dipp » 2.5 dipp, 2.4 die, 2.4 dime

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

• Adding a wildcard symbol may retrieve word variants: technology race relations 2.4 dipp south communications costs power development policies a.*.