Perhaps you should try some spelling variations:
12.3 communication » 2.3 communication, 1.3 communication, 2.2.3 communication
developpement en » developpement et, developpement des, developpement de
4 developpement » de developpement, le developpement, et developpement
technology 2.2 » technology _, technology 1, technology 3
detection game » detection rate, detection based, detection crime
2.2 detection » 22.2 detection, 3.2 detection, 4.2 detection
game rates » frame rates, game frames, game games
rates 12.3 » states 12.3, rates 4.3
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 detection game rates 12.3 communication costs 4 developpement en afrique.*.