Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
su hai » su tai
hai ky » thai ky, hoi ky, hai ly
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

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

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