Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
hoc sach » hoc sinh, hoc cac
nhan cua » nhat cua, nhan luc, nhan su
thuc va » thuc vat, thuc dan, thuc day
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hoc anh » hoc nganh, hoc nhanh, ngoc anh
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) OR (hoc anh)) ky lang xa hoi. lieu va cam ((luc va) or (thuc va)) thanh nhan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc anh)) ky lang xa hoi. lieu va cam ((luc va) OR (thuc va)) thanh nhan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc anh)) ky lang xa hoi. lieu va cam ((luc va) or (thuc va)) thanh nhan cua tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc anh)) ky lang xa hoi. lieu va cam ((luc va) or (thuc va)) thanh nhan cua tre*.