Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
su sach » so sach, vu sach
danh di » danh du, xanh di, danh dien
van cau » van dau, van hau, van chat
sach ty » sach y, sach tu, sach thu
van cam » van nam, van lam, van dam
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo

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 ((van cam) OR (van cau)) thuc dan ((hanh vi) OR (danh di)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ((van cam) OR (van cau)) thuc dan ((hanh vi) or (danh di)) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((van cam) OR (van cau)) thuc dan ((hanh vi) or (danh di)) cuu tre*.