Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dang » hanh dong, hanh dung, hanh mang
luan hung » luan chung, lan hung, luan ung
hung cong » nhung cong, hung cuong, phung cong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
anh dang » anh dong, anh dung, anh bang
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((hanh dang) or (anh dang)) luan hung cong hach toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh dang) OR (anh dang)) luan hung cong hach toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh dang) or (anh dang)) luan hung cong hach toan ban*.