Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
cam thuc » am thuc, nam thuc, cam thu
cua tre » cuu tre, cua triet, dua tren
hang di » hang doi, hang vi, hang dien
sach ty » sach y, sach tu, sach thu
te sach » toc sach
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va cam thuc van ((hang di) or (hanh vi)) ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu va cam thuc van ((hang di) OR (hanh vi)) ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu va cam thuc van ((hang di) or (hanh vi)) ((cua tre) OR (cua te))*".