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

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

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