Perhaps you should try some spelling variations:
labor compensation » sector compensation
developpement du » developpement de, developpement des, developpement et
technology 1 » technology _
1 innovation » 2 innovation, 3 innovation, 4 innovation
innovation 3 » innovation 1, innovation 4
dem labor » dead labor, term labor, do labor
du africa » de africa, eu africa, 1 africa
3 dem » _ dem, 3 des, a dem

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: "technology 1 innovation 3 dem labor compensation ((4.3 der) OR (2.3 der)) developpement du africa.~".
• Adding a wildcard symbol may retrieve word variants: technology 1 innovation 3 dem labor compensation ((4.3 der) OR (2.3 der)) developpement du africa.*.