Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
tham thuc » nham thuc, pham thuc, tam thuc
ty nang » ky nang, ty xang, ty hang
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
dinh va » dinh van, dinh ve, tinh va
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua
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 tham thuc va dinh 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 tham thuc va dinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) ty nang x hoi. lieu va tham thuc va dinh va cua tre*.