Perhaps you should try some spelling variations:
china communications » china communication, china's communications, chile communications
developpement et » developpement des, developpement de, development east
der variations » der variation, 1er variations, ier variations
variations 19 » variations 1, variations 11, variations 9
et afrique » en afrique, l afrique
has china » gas china, us china, u.s china
1 de » 1 die, 1 der, 2 de
_ de » _ der, _ den, _ do
theorie » theories

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

• Performing a fuzzy search may retrieve terms with similar spellings: theorie der variations 19 has china communications ((1 de) OR (_ de)) developpement et afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theorie der variations 19 has china communications ((1 de) OR (_ de)) developpement et afrique.*".