Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua dung » cua dang, cua dong, qua dung
toan cao » toan ban, toan tap
cong ly » cong ty, cong li, cong my
ly toan » le toan, ly hoan, ly tran

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 tung ((cua dung) or (su dung)) cong ly toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh tung ((cua dung) OR (su dung)) cong ly toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - thanh tung ((cua dung) or (su dung)) cong ly toan cao*.