Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hieu manh » chieu xanh, hieu nganh, dieu hanh
luong tai » dung tai, luong va
hoc hieu » hoc thieu, hoc hien, doc hieu
van bang » van ban, van nang, von bang
tai toan » bai toan, tap toan, tai tuan
toan cao » toan ban, toan tap

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 tran ((van bang) or (van dong)) luong tai toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tran ((van bang) OR (van dong)) luong tai toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tran ((van bang) or (van dong)) luong tai toan cao*.