Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
doc trinh » hoc trinh, dong trinh, loc tinh
doi trinh » doi tinh, dong trinh, doi trong
cong cong » cong dong, trong cong, dung cong
doc tinh » dac tinh, loc tinh, don tinh
tinh cua » trinh cua, sinh cua, tinh chat
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doc trinh) OR (doi trinh))) OR (doc tinh)) tinh - nhanh tinh cua cong cong san than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((doc trinh) OR (doi trinh))) or (doc tinh)) tinh - nhanh tinh cua cong cong san than cap~".
• Adding a wildcard symbol may retrieve word variants: ((((doc trinh) OR (doi trinh))) or (doc tinh)) tinh - nhanh tinh cua cong cong san than cap*.