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

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc trinh) OR (doc tinh)) tinh - nhanh tinh cua ((cong cong) or (dung cong)) ban than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc trinh) OR (doc tinh)) tinh - nhanh tinh cua ((cong cong) OR (dung cong)) ban than cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc trinh) OR (doc tinh)) tinh - nhanh tinh cua ((cong cong) or (dung cong)) ban than cap*".