Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
soc van » hoc van, oc van, sac van
hanh di » hanh vi, hang di, danh di
hanh de » hanh ve, hanh kem
y nang » ky nang, ly nang, v nang

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: "tu sach y nang xa hoi. hieu qua cham soc van ((hanh di) OR (hanh de)) cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu qua cham soc van ((hanh di) OR (hanh de)) cua vat*.