Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cam tuc » cam xuc, cam tu, nam thuc
va danh » va dinh, dia danh, va thanh
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va hanh » van hanh, va thanh, ban hanh
va cam » va cham, va cac, va cao
va dan » ca dan, va dao, va dau
vi va » vi van, vai va, vu va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu va cam tuc ((va hanh) OR (((va danh) OR (va dan)))) vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu va cam tuc ((va hanh) or (((va danh) OR (va dan)))) vi va triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu va cam tuc ((va hanh) or (((va danh) OR (va dan)))) vi va triet*.