Perhaps you should try some spelling variations:
duong manh » duong van
tieu lang » hieu lang, tien lang, tieu dung
tranh vat » trinh vat, tranh va, tranh van
hoi tieu » hoc tieu, hoi hieu, hoi tiep
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi tieu lang - canh tranh vat dung ((duong manh) or (cong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi tieu lang - canh tranh vat dung ((duong manh) OR (cong dan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoi tieu lang - canh tranh vat dung ((duong manh) or (cong dan)) toan tap*.