Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong cong » cong dong, trong cong, dung cong
kien mac » dien mao, tien mai, kien ha
dien anh » tieng anh, dien dan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 ((kien mac) or (dien anh)) - ((canh tranh) or (thanh trung)) cua cong cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((kien mac) OR (dien anh)) - ((canh tranh) OR (thanh trung)) cua cong cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((kien mac) or (dien anh)) - ((canh tranh) or (thanh trung)) cua cong cong dan toan ban*.