Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hang di » hang doi, hang vi, hang dien
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang xa hoi. hieu va cam thuc dan ((hang di) or (hanh de)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu va cam thuc dan ((hang di) OR (hanh de)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu va cam thuc dan ((hang di) or (hanh de)) cua tre*.