Perhaps you should try some spelling variations:
duong manh » duong van
tranh vat » trinh vat, tranh va, tranh van
cong danh » cuong danh, cong dan, cong thanh
hoi tieu » hoi hieu, hoi tiep, loi tieu
hoc tieu » hoc thieu, hoc dieu, hoc sieu
vat dung » van dung, va dung, viet dung
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) or (hoc tieu)) lang - canh tranh vat dung ((duong manh) or (cong danh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoi tieu) OR (hoc tieu)) lang - canh tranh vat dung ((duong manh) OR (cong danh)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ((hoi tieu) or (hoc tieu)) lang - canh tranh vat dung ((duong manh) or (cong danh)) toan tap*.