Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
hieu lang » chieu sang, hieu quang, nhieu tang
dong cong » duong cong, dung cong, dang cong
doi hieu » doi chieu, doc hieu, doi hien
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - ((hanh trang) or (thanh trung)) cua dong cong dan ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - ((hanh trang) OR (thanh trung)) cua dong cong dan ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - ((hanh trang) or (thanh trung)) cua dong cong dan ((toan ban) or (van ban))*.