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
chua tre » chua tri, cua tre, chua trieu
ty nang » ky nang, ty xang, ty hang
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
dinh va » dinh van, dinh ve, tinh va
va chua » vua chua, ca chua, va chu
x hoi » o hoi, x ho, 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: ((thuoc sach) or (thuat sach)) ty nang ((x hoi) or (xa hoi)). lieu va nham thuc va dinh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat sach)) ty nang ((x hoi) OR (xa hoi)). lieu va nham thuc va dinh va chua tre.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) ty nang ((x hoi) or (xa hoi)). lieu va nham thuc va dinh va chua tre*.