Perhaps you should try some spelling variations:
nhanh long » nhanh dong, thanh long, nhanh lang
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dong » anh dong, ha dong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - ((nhanh long) or (hanh dong)) ((cua nhung) or (va nhung)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - ((nhanh long) OR (hanh dong)) ((cua nhung) OR (va nhung)) cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - ((nhanh long) or (hanh dong)) ((cua nhung) or (va nhung)) cong tac toan tap*.