Perhaps you should try some spelling variations:
communication data » communication 3, communication 1, communication 3.3
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
4 integrating » _ integrating
technology 4 » technology _, technology 1, technology 3
10 true » 10 three, 10 trade, 10 tried
data au » data auf, data a, data als
1 true » _ true, a true

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 integrating _ ((10 true) OR (1 true)) communication data au developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology 4 integrating _ ((10 true) OR (1 true)) communication data au developpement en afrique.*.