Perhaps you should try some spelling variations:
dung cong » dung trong
tien anh » tien manh, dien anh, tien thanh
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
va dung » van dung, va duong, vat dung
tan can » toan can, tan van, ban can
can cau » van cau, ban cau, ca cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien anh) or (tieng anh)) - canh tranh va dung cong tan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (tieng anh)) - canh tranh va dung cong tan can cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) or (tieng anh)) - canh tranh va dung cong tan can cau*.