Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham xuc » cam xuc, chat xuc, cham soc
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
va cham » va chat, va tham
va vanh » va danh, va hanh, va anh
tai su » tai so, tai tu, lai su

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

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