Perhaps you should try some spelling variations:
communications 5.1 » communication 5.1, communications 2.1, communications 8.1
envision series » edition series, supervision series, envision overview
et development » et developpment, set development, ct development
new envision » new vision, new division, new television
theorie new » theories neo, theorie der, theorie des
1 afrique » l afrique, en afrique, 1 enrique
e china » ke china, 2 china, 3 china
4 china » 2 china

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 new envision series ((e china) OR (4 china)) communications 5.1 et development 1 afrique.~".
• Adding a wildcard symbol may retrieve word variants: theorie new envision series ((e china) OR (4 china)) communications 5.1 et development 1 afrique.*.