Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
duong manh » duong van
hieu lang » chieu sang, hieu quang, nhieu tang
trang vat » trang va, trang vai, tang vat
hoi hieu » hoi phieu, hoi tieu, moi hieu
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 hieu lang - hanh trang vat dung ((duong manh) or (cong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - hanh trang vat dung ((duong manh) OR (cong dan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - hanh trang vat dung ((duong manh) or (cong dan)) toan tap*.