Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va hanh » van hanh, va thanh, va danh
su tai » su thi, tu tai
tai ky » thai ky, trai ky, sai ky
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
x hoi » o hoi, x ho, 5 hoi
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su tai ky nang ((x hoi) or (xa hoi)). hieu ((ve cac) or (va cam)) luc va hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su tai ky nang ((x hoi) OR (xa hoi)). hieu ((ve cac) OR (va cam)) luc va hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: su tai ky nang ((x hoi) or (xa hoi)). hieu ((ve cac) or (va cam)) luc va hanh vi su triet*.