Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
va vanh » va danh, va hanh, va anh
va cao » va cac, va co, va dao
tri su » tri du, tai su, trinh su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang xa hoi. hieu va cao xuc ((va vanh) or (va van)) tri su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. hieu va cao xuc ((va vanh) OR (va van)) tri su triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu va cao xuc ((va vanh) or (va van)) tri su triet*.