Perhaps you should try some spelling variations:
developing control » developing country, developed control, developing countriesl
control programmes » control programme, control programs, control program
approximation der » approximation des, approximation does, approximation model
der developing » debt developing, dcm developing, do developing

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

• Performing a fuzzy search may retrieve terms with similar spellings: approximation der developing control programmes.~.
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