Perhaps you should try some spelling variations:
communication mode » communication model, communication modes, communication module
3.2 communication » 3 communication, 2.3 communication, de communication
d1 developpement » de developpement, du developpement, le developpement
developpement en » developpement et, developpement des, developpement de
technology 3.1 » technology 1, technology 2.2, technology _
model trade » modern trade, model traem, model tree
trade 3.2 » trade 2.2, trade 2, trade 4.1
mode d1 » mode de, mode 1, mode 4.1

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

• Adding a wildcard symbol may retrieve word variants: technology 3.1 information model trade 3.2 communication mode d1 developpement en afrique.*.