Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san
hieu lang » chieu sang, hieu quang, nhieu tang
quan dong » quang dong, quan long, quan hoang
dong cong » duong cong, dung cong, dang cong
hanh ban » thanh ban, hang ban, hanh san
ban quan » van quan
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 ban quan dong cong ((tinh toan) or (thanh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ban quan dong cong ((tinh toan) OR (thanh toan)) tap.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ban quan dong cong ((tinh toan) or (thanh toan)) tap*.