Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
nho hieu » nha hieu, nho sieu, nhu hieu
thanh va » thanh van, hanh va, thanh ha
dan than » dan chan, ban than, van than

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 - hanh ((thanh va) OR (thanh toan)) nhung cong ((xuan toan) OR (dan than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - hanh ((thanh va) OR (thanh toan)) nhung cong ((xuan toan) OR (dan than)) cau".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh ((thanh va) OR (thanh toan)) nhung cong ((xuan toan) OR (dan than)) cau*.