Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement du » developpement de, developpement des, developpement et
technology 4 » technology _, technology 1, technology 3
section low » section l, section o, section w
du afrique » en afrique, l afrique, de l'afrique
4 section » 3 section, 4 selection, 1.4 section
low rate » flow rate, low water, low rank
costs de » costs _, costs a, costs 5
rate de » rate due, rate debt, rate does
costs 4 » costs _, costs a, costs 4.2

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology 4 section low rate de communication ((costs de) OR (costs 4)) developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology 4 section low rate de communication ((costs de) OR (costs 4)) developpement du afrique.*.