Perhaps you should try some spelling variations:
communication 3.4.1 » communication 3.2.1, communication 3.3.1, communication 3.4.4
time communication » de communication, mobile communication, online communication
der development » order development, under development, oer developments
development en » developpement en, development menu, development eco
2 interaction » 3 interaction, 3.2 interaction, 3.1 interaction
technology 2 » technology _, technology 1, technology 3
3.4.1 der » 2.4.1 der, 3.4.2 der, 3.4.3 der
3.3 2 » 3.3 2d, 3.3 a, 3.3 e

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 2 interaction ((3.3 2) OR (3.3 _)) time communication 3.4.1 der development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology 2 interaction ((3.3 2) OR (3.3 _)) time communication 3.4.1 der development en afrique.*.