Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
hieu quang » thieu quang, hieu quan, hieu qua
trung phat » truong phat, trong phat, trung phan
nhung dong » nhung don, nhung cong, nhung dung
dong thanh » truong thanh
thanh tap » thanh lap, thanh tai, thanh tay
doc hieu » toc thieu, hoc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu quang - thanh ((trung phat) or (trung tam)) nhung dong thanh thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu quang - thanh ((trung phat) OR (trung tam)) nhung dong thanh thanh tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu quang - thanh ((trung phat) or (trung tam)) nhung dong thanh thanh tap*.