Perhaps you should try some spelling variations:
developed countries » developing countries
oral communication » personal communication
technology plant » technology poland, technology land, technology giants
countries africa » countries april, industries africa
plant operation » plant operations
operation age » operation stage, operation case, operation amp
20 developed » 2.0 developed, _ developed, a developed
costs 20 » costs 60, costs 2.3, costs 2.1
1 oral » 10 oral, 14 oral, 16 oral
age 1 » age _, age a, age 2

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

• Adding a wildcard symbol may retrieve word variants: technology plant operation age 1 oral communication costs 20 developed countries africa.*.