Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
nham thuc » nhan thuc, nam thuc, nham thu
danh va » doanh va, hanh va, dan va
thuc va » thuc vat, thuc dan, thuc day
va nham » va cham, va tham, va nha
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
anh va » hanh va
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: ((thuoc sach) or (thuat sach)) ty nang x hoi. lieu va nham thuc va ((danh va) OR (anh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat sach)) ty nang x hoi. lieu va nham thuc va ((danh va) OR (anh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (thuat sach)) ty nang x hoi. lieu va nham thuc va ((danh va) OR (anh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) ty nang x hoi. lieu va nham thuc va ((danh va) OR (anh va)) cua tre*.