Perhaps you should try some spelling variations:
smes development » sme development, sms development, pme's development
development menu » development mega, development min, development manuel
menu afrique » en afrique
4 variation » 2 variation, 4 validation
variation 6 » variation _, variations _, variation des
topology 4 » topology _, topology c, topology 2.4
der tropen » den tropen, der treppen, die tropen
der open » der oper, der opec, der opfer
a smes » _ smes, 8 smes

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: "topology 4 variation 6 ((der open) OR (der tropen)) communication a smes development menu afrique.~".
• Adding a wildcard symbol may retrieve word variants: topology 4 variation 6 ((der open) OR (der tropen)) communication a smes development menu afrique.*.