Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van tham » van thanh, van tuan, van tai
van chat » cao chat
danh sai » dung sai, danh bat, danh dau
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
sai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
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: toc sach ky nang x hoi. thien ((van tham) OR (van chat)) thuc va danh sai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang x hoi. thien ((van tham) OR (van chat)) thuc va danh sai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. thien ((van tham) OR (van chat)) thuc va danh sai cua tre*.