Perhaps you should try some spelling variations:
modern developments » model development, power developments, major developments
communication cost » communication costs, communication costa, communications costs
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
inflation target » inflation targeting, inflation rate, inflation rates
developments en » developments end, developments web, developments _
technology has » technology hard, technology have, technology how
has inflation » how inflation, u.s inflation, cases inflation
target data » target date, target rate, target path
cost modern » post modern, post moderne, cost model
data 4.1 » data 4.2, data 4.3, data 1

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

• Adding a wildcard symbol may retrieve word variants: technology has inflation target data 4.1 communication cost modern developments en afrique.*.