Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
time communication » de communication, mobile communication, online communication
development case » development china
technology 3 » technology _, technology 1, technology 4
3 regularity » _ regularity, 4.3 regularity, _ irregularity
regularity 5 » regularity _, regularity 1, regularity 2
prices time » price time, prices life, prices rise
cost sector » cost vector, port sector, forest sector
5 prices » 2 prices, 5 price, 5 process

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

• Adding a wildcard symbol may retrieve word variants: technology 3 regularity 5 prices time communication cost sector development case part.*.