Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hieu manh » chieu xanh, hieu nganh, dieu hanh
cuong tap » cong tac, luong tai, cong tan
luong tap » luong tai, luong tham, luong thai
hoc hieu » hoc thieu, hoc hien, doc hieu
van bang » van ban, van nang, von bang
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)) ((cuong tap) OR (luong tap)) 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)) ((cuong tap) OR (luong tap)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh tran ((van bang) or (van dong)) ((cuong tap) OR (luong tap)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tran ((van bang) or (van dong)) ((cuong tap) OR (luong tap)) toan cao*.