Perhaps you should try some spelling variations:
small estimates » small states, sharp estimates, summary estimates
estimates using » estimation using
der klangs » der klange, des klangs, der klang
klangs der » lange der, klage der
klang der » klarung der, gang der
der small » der smart, d small, der smad
dong bin » dong di, dann bin

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

• Performing a fuzzy search may retrieve terms with similar spellings: klang der klangs der small estimates using ((dong sin) or (dong bin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: klang der klangs der small estimates using ((dong sin) OR (dong bin)) ;*.