Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong vang » cong quang, cong ngang, cong dong
cong lang » cong luong, cong quang, cong ngang
hoc hieu » hoc thieu, hoc hien, doc hieu
tung cua » trung cua, tuong cua, dung cua
cong san » cong tac
toan ban » van ban

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 cua cong ((((cong vang) OR (cong san))) or (cong lang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung cua cong ((((cong vang) OR (cong san))) OR (cong lang)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh tung cua cong ((((cong vang) OR (cong san))) or (cong lang)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung cua cong ((((cong vang) OR (cong san))) or (cong lang)) toan ban*.