Perhaps you should try some spelling variations:
technology data » technology dlt, technology debate, technology debts
developpement 2 » developpement de, developpement et, developpement du
data formation » data information, la formation, data formats
formation des » formation _
opec mobile » open mobile, one mobile, other mobile
2 african » _ african, 1 african
des opec » der opec, des opnv

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 data formation des opec mobile communication ((a l) OR (a la)) developpement 2 african.~".
• Adding a wildcard symbol may retrieve word variants: technology data formation des opec mobile communication ((a l) OR (a la)) developpement 2 african.*.