Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
te sach » toc sach
hanh de » hanh ve, hanh kem
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich
sach ty » sach y, sach tu, sach thu
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
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 va ((((hang di) OR (hang vi))) 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 va ((((hang di) OR (hang vi))) OR (hanh de)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu va cam thuc va ((((hang di) OR (hang vi))) or (hanh de)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu va cam thuc va ((((hang di) OR (hang vi))) or (hanh de)) cua tre*.