Perhaps you should try some spelling variations:
communication 3.3.4 » communication 2.3.4, communication 3.3.1, communication 3.4.4
does development » dams development, ides development, smes development
development en » developpement en, development menu, development eco
1 interaction » 10 interaction, 17 interaction, 19 interaction
interaction 1 » interaction _, interaction 4, interaction a
technology 1 » technology _
3.3.4 does » 3.3.4 die, 3.3.4 das, 5.4.4 does
2 true » a true, 1 true, 2 tree

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 1 interaction 1 ((2 true) OR (_ true)) communication 3.3.4 does development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology 1 interaction 1 ((2 true) OR (_ true)) communication 3.3.4 does development en afrique.*.