Perhaps you should try some spelling variations:
thong tuong » thong thuong, thong thong, thong duong
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cao thong » cao thuong, tao thong, cao phong
hoc hieu » hoc thieu, hoc hien, doc hieu
tung cao » nung cao, truong cao, trung cap
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh tung cao thong tuong ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung cao thong tuong ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung cao thong tuong ((dan toan) or (dan than)) cau*.