Perhaps you should try some spelling variations:
developed country » developed countries, developing country
country variables » control variables, country parable, country variance
information lost » information loss, information cost, information list
technology 1 » technology _
10 developed » 1 developed, 2.0 developed, _ developed
lost decade » last decade, first decade
costs 10 » costs 1, costs 20, costs 60

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information lost decade _ communication costs 10 developed country variables.*.