Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
development case » development china
per development » power development, spur development, oer developments
technology 1 » technology _
1 relations » 3 relations, a relations, 1.2 relations
du prices » do prices, drug prices, drugs prices
costs per » cost per
2 prices » 2 price, 2 proces, do prices

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 relations ((du prices) OR (2 prices)) de communication costs per development case _.~".
• Adding a wildcard symbol may retrieve word variants: technology 1 relations ((du prices) OR (2 prices)) de communication costs per development case _.*.