Perhaps you should try some spelling variations:
calculation where » calculations charge, calculation source, calculations phase
der communication » de communication, under communication, debt communication
based development » basin development, land development, rapid development
development main » development making, development moving, development mode
main afrique » en afrique
costs based » cost based, costs case, hots based
where x » where _, where i, where a
x der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologies _ calculation where x der communication costs based development main afrique.*.