Perhaps you should try some spelling variations:
technological war » technological art, technological gap, technological world
immigration rules » immigration quotas, immigration law, immigration laws
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
war immigration » war migration, toward immigration, labor immigration
4 communication » 3 communication, 5.4 communication, de communication
costs au » costs a, costs amy, costs _
daten 4 » daten 5, daten b, daten 1

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

• Adding a wildcard symbol may retrieve word variants: technological war immigration rules daten 4 communication costs au developpement en afrique.*.