Perhaps you should try some spelling variations:
communication paper » communication power, communication pattern, communication partner
leur developpement » le developpement, deux developpements, de developpement
2.3 communication » 3.2 communication, de communication, 4 communication
confirmation gas » confirmation bias, confirmation cases, confirmation pages
developpement en » developpement et, developpement des, developpement de
5 confirmation » _ confirmation, de confirmation, 5.1.2 confirmation
technology 5 » technology _, technology 1, technology 3
prices 2.3 » price 2.3, prices 2.4, prices 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology 5 confirmation gas prices 2.3 communication paper leur developpement en afrique.*.