Perhaps you should try some spelling variations:
datos communications » data communications, laos communications, states communications
case information » care information, based information, phase information
developpement de » developpement des, developpement durable
techniques case » techniques laser, techniques based, techniques cost
information age » information storage, information access, information about
de afrique » de l'afrique, en afrique, l afrique
1 datos » a datos, b datos, c datos
age 1 » age _, age a, age 2
2 eu » _ eu, i eu, 2 e
2 zu » 2 zur, 2 zum

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

• Performing a fuzzy search may retrieve terms with similar spellings: techniques case information age 1 datos communications ((2 eu) OR (2 zu)) developpement de afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "techniques case information age 1 datos communications ((2 eu) OR (2 zu)) developpement de afrique.".
• Adding a wildcard symbol may retrieve word variants: techniques case information age 1 datos communications ((2 eu) OR (2 zu)) developpement de afrique.*.