Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
thuc van » thuc vat, thuc dan, thuc va
te sach » toc sach
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
va nham » va cham, va tham, va nha
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
hoc anh » hoc nganh, hoc nhanh, ngoc anh
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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: ((te sach) OR (hoc anh)) ty nang x hoi. hieu va nham thuc van ((hanh di) OR (hanh de)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (hoc anh)) ty nang x hoi. hieu va nham thuc van ((hanh di) OR (hanh de)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc anh)) ty nang x hoi. hieu va nham thuc van ((hanh di) OR (hanh de)) cua tre*.