Perhaps you should try some spelling variations:
proper communication » power communication, prone communication, provider communication
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
a variation » la variation, _ variation, 2 variation
apology a » apology _, apology mea, typology a
des der » des dr, des dem, des des
des ddr » der ddr, des dr, dem ddr
a des » a der, a das

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: "apology a variation ((des der) OR (des ddr)) proper communication a des developpements en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology a variation ((des der) OR (des ddr)) proper communication a des developpements en afrique.*.