Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
hanh tu » anh tu, danh tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - hanh tranh ((cua hang) or (cua dang)) ((cong dan) OR (cong san)) hanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh tranh ((cua hang) OR (cua dang)) ((cong dan) OR (cong san)) hanh tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh tranh ((cua hang) or (cua dang)) ((cong dan) OR (cong san)) hanh tu".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh tranh ((cua hang) or (cua dang)) ((cong dan) OR (cong san)) hanh tu*.