Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
toc sach » hoc sach, doc sach, thuoc sach
danh dai » danh dau, danh di, danh sai
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, 5 hoi

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 y nang ((x hoi) or (x ho)). lieu va nham thuc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang ((x hoi) OR (x ho)). lieu va nham thuc va danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ((x hoi) or (x ho)). lieu va nham thuc va danh dai cua tre*.