Perhaps you should try some spelling variations:
cao hoi » cau hoi, co hoi, cao hoc
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang cao hoi. hieu ((ve cham) or (ve cac)) luc va hanh ((vi cua) OR (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang cao hoi. hieu ((ve cham) OR (ve cac)) luc va hanh ((vi cua) OR (di cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang cao hoi. hieu ((ve cham) or (ve cac)) luc va hanh ((vi cua) OR (di cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang cao hoi. hieu ((ve cham) or (ve cac)) luc va hanh ((vi cua) OR (di cua)) triet*.