Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
toc sach » hoc sach, doc sach, thuoc sach
qua nham » qua nhat, qua cham, sua nham
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
thuc va » thuc vat, thuc dan, thuc day
dan dai » dat dai, dan da, ban dai
dan dat » dung dat, dong dat, dinh dat
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.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang x hoi. hieu qua nham thuc va ((((dan dai) or (can dai))) or (dan dat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang x hoi. hieu qua nham thuc va ((((dan dai) OR (can dai))) OR (dan dat)) cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang x hoi. hieu qua nham thuc va ((((dan dai) or (can dai))) or (dan dat)) cua tre*.