Perhaps you should try some spelling variations:
national development » international development, institutional development, social development
higher communication » fiber communication, niger communications, teacher communication
development balkan » development banking, development bank, development banks
costs national » cross national, across national, gross national
technology 3 » technology _, technology 1, technology 4
3 relations » et relations, des relations
relations 2 » relations _, relations a, relations 3
balkan data » belgian data
2 does » 4 does

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

• Adding a wildcard symbol may retrieve word variants: technology 3 relations 2 does higher communication costs national development balkan data.*.