Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hien xanh » hien hanh, hien nhanh, chieu xanh
long doan » cong doan, dong doanh, rong doanh
khoan cam » khoa cam, khoan va, phan cam
trinh ha » trinh han, trinh hoa, trinh nha
ha thanh » va thanh, pham thanh, phan thanh
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, phan cac

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 xanh - canh trinh ha thanh ((cong dan) or (long doan)) ((khan cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh trinh ha thanh ((cong dan) OR (long doan)) ((khan cap) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh trinh ha thanh ((cong dan) or (long doan)) ((khan cap) or (khoan cam))*.