Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
models development » model development, module development, model developments
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
technologie 3d » technologies 3d, technologie 3, technologie und
development en » developpement en, development menu, development eco
3d inflation » d inflation, und inflation, 3.2 inflation
cost models » cost model, logit models
case 1.1 » case 14.1, cases 1.1, case 13.1

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

• Adding a wildcard symbol may retrieve word variants: technologie 3d inflation _ case 1.1 communication cost models development en afrique.*.