Perhaps you should try some spelling variations:
cong thuong » hang thuong
hanh tranh » canh tranh, hanh trinh, hanh trang
thien danh » thien anh, thien dang, thien thanh
tranh chap » tranh cua, trinh chat
thuong dam » thuong mai, huong dan, truong dai
hieu manh » chieu xanh, hieu nganh, dieu hanh
chap cong » phap cong, nhap cong, chat cong
dam thanh » dao thanh, nam thanh, am thanh
thanh cau » thanh chau, thanh mau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien danh) or (hieu manh)) - hanh tranh chap cong thuong dam thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (hieu manh)) - hanh tranh chap cong thuong dam thanh cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (hieu manh)) - hanh tranh chap cong thuong dam thanh cau*.