Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hieu xanh » chieu xanh, hieu manh, hieu nganh
ban trong » bai trong, ban tuong, ben trong
son thanh » ban thanh, van thanh
doc hieu » toc thieu, hoc thieu, hoc hien
toan ban » van ban
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - thanh toan ban trong cong ((son thanh) or (van tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh toan ban trong cong ((son thanh) OR (van tuan)) cao*.