Perhaps you should try some spelling variations:
calculations charge » calculations chapter, calculations phase, calculation range
when communication » where communication, open communication, sign communication
communication cost » communication costs, communication costa, communications costs
development model » development models, development middle
site development » sme development, mine development, estate development
cost site » cost side, cost some, cost city
charge i » charge _, charge a, charge 5
i when » ii when, 3 when, 4 when

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

• Adding a wildcard symbol may retrieve word variants: technologies _ calculations charge i when communication cost site development model afrique.*.