Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
thanh son » thanh san, thanh cong, thanh toan
hang cong » dang cong, hang nong, bang cong
cong nhan » cong nhat, cong thanh, cong san
nhan toan » nhat toan, thanh toan, nganh toan
toan ban » van ban
va hang » van hang, va nang, va lang
son va » song va, son la, lon va

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 xanh) or (hieu manh)) - thanh son va hang cong nhan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh son va hang cong nhan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - thanh son va hang cong nhan toan ban*.