Perhaps you should try some spelling variations:
study confirmation » side confirmation, de confirmation, equal confirmation
confirmation war » confirmation bias, confirmation page, confirmation _
de communication » mobile communication, online communication
du developpement » de developpement, le developpement, et developpement
des afrique » en afrique, de l'afrique
war space » air space, war peace, war race
space de » espace de, space die, space dead
costs du » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology study confirmation war space de communication costs du developpement des afrique.*.