Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
5 hoi » o 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: so sach ky nang ((5 hoi) or (xa hoi)). hieu ((va cac) or (va cham)) xuc va hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ((5 hoi) OR (xa hoi)). hieu ((va cac) OR (va cham)) xuc va hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((5 hoi) or (xa hoi)). hieu ((va cac) or (va cham)) xuc va hanh vi su triet*.