Perhaps you should try some spelling variations:
developing control » developing country, developed control, developing countriesl
information cost » information costs, information lost, information case
3 communication » 4 communication, de communication, data communication
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
control aerial » control trial, control trials, control series
3 information » 1 information
technology 3 » technology _, technology 1, technology 4
cost decade » lost decade, lost decades, last decade
costs 2.3 » costs 4.2, costs 4.4
decade 3 » decade _, decade 1, decade 2

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

• Adding a wildcard symbol may retrieve word variants: technology 3 information cost decade 3 communication costs 2.3 developing control aerial.*.