Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
cua nhung » va nhung
anh dang » anh dong, anh dung, anh bang
dang cua » dung cua, dong cua, mang cua
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho ((hieu lang) or (hieu quang)) - anh dang cua nhung ((cong tan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho ((hieu lang) OR (hieu quang)) - anh dang cua nhung ((cong tan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: nho ((hieu lang) or (hieu quang)) - anh dang cua nhung ((cong tan) or (cong san)) toan cao*.