Perhaps you should try some spelling variations:
csr communications » csr communication, cell communications, chad communications
developpement l » developpement il, developpement la, developpement de
und variablen » der variablen
variablen a » variablen aa, variablen 1, variablen _
l afrique » en afrique
does csr » does cash
a does » 2 does, 4 does, 1 does
2 de » 2 der, _ de
theorie » theories

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: "theorie und variablen a does csr communications ((2 de) OR (2 die)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: theorie und variablen a does csr communications ((2 de) OR (2 die)) developpement l afrique.*.