Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
hoi hieu » hoi phieu, hoi tieu, doi chieu
moi hieu » moi dieu, doi chieu, mot chieu
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than man » than ma, thanh san, tran manh

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) or (moi hieu)) lang - ((hanh tranh) OR (canh tranh)) cua thong cong tan than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoi hieu) OR (moi hieu)) lang - ((hanh tranh) OR (canh tranh)) cua thong cong tan than man*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoi hieu) or (moi hieu)) lang - ((hanh tranh) OR (canh tranh)) cua thong cong tan than man*".