Perhaps you should try some spelling variations:
guiana communications » guyana communications, guinea communications, ghana communications
communications 5 » communications _, communications a, communications pt
au developpement » du developpement, de developpement, le developpement
de variation » der variation, die variation, does variation
variation 5 » variation _, variation 6, variation a
theorie de » theorie der, theorie des, theorie die
new guiana » new guinea, new guidance
et afrique » en afrique
l afrique » en afrique
5 new » _ new, a new, 3 new
5 au » 5 auf, 5 aut, 5 a

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

• Performing a fuzzy search may retrieve terms with similar spellings: theorie de variation 5 new guiana communications 5 au developpement ((et afrique) OR (l afrique)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theorie de variation 5 new guiana communications 5 au developpement ((et afrique) OR (l afrique)).*".