Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hanh tram » hanh tam, hanh trang, thanh tran
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
he tong » he thong, he trong, he cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doc hieu)) xanh - ((hanh tram) or (thanh toan)) he tong cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) xanh - ((hanh tram) OR (thanh toan)) he tong cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) xanh - ((hanh tram) or (thanh toan)) he tong cong dan toan ban*.