Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
doanh van » doan van, doanh va, doanh ban
nha thuc » nhan thuc, nha thuoc, nham thuc
thuc day » thuc dan, thuc vat
danh vai » danh sai, danh va, dang van
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
va nha » va nho, ve nha
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 ty nang x hoi. lieu va nha thuc day ((danh vai) or (doanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty nang x hoi. lieu va nha thuc day ((danh vai) OR (doanh van)) cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty nang x hoi. lieu va nha thuc day ((danh vai) or (doanh van)) cua tre*.