Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
canh trinh » canh tranh, hanh trinh, canh tinh
long doan » cong doan, dong doanh, rong doanh
trinh va » trinh van, trinh vat, trinh ve
va thanh » gia thanh, ban thanh, va tinh
long dan » cong dan, nong dan, long van
khan cap » khan ap, than cap, khoan cam
than cua » nhan cua, thai cua, ban cua

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