Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
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 dinh » van dinh, va tinh, vu dinh
va kinh » va tinh, qua kinh

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu va cham soc ((va dinh) OR (va kinh)) dai cua viet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu va cham soc ((va dinh) OR (va kinh)) dai cua viet*.