Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thanh tran » thanh trang, thanh toan, thanh tra
hieu cach » hieu cac, chieu sach, hieu ca
hanh dang » hanh dong, anh dang, hanh dung
van thong » van thuong, van phong, va thong
hoc hieu » hoc thieu, hoc hien, doc hieu
dang van » hoang van, hang 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 hieu cach - hanh dang van thong cong ((thanh tran) or (thanh san)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - hanh dang van thong cong ((thanh tran) OR (thanh san)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - hanh dang van thong cong ((thanh tran) or (thanh san)) ban*.