Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ve triet » va trien, su triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van dam » van nam, van dao, van dau
va hanh » van hanh, va thanh, ban hanh
va danh » va dan, dia danh, va thanh
va dinh » van dinh, va kinh, va tinh
dam tu » nam tu, cam tu, tam tu
vi ve » va ve, gi ve, ve ve

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 xa hoi. hieu van dam tu ((va hanh) or (((va danh) or (va dinh)))) vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu van dam tu ((va hanh) OR (((va danh) OR (va dinh)))) vi ve triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu van dam tu ((va hanh) or (((va danh) or (va dinh)))) vi ve triet*.