Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van tham » van thanh, van tuan, van tai
van chat » cao chat
hanh sai » hanh san, hanh tai, danh sai
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
sai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
cua te » cua tu
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: hoc sach y nang x hoi. thien ((van tham) or (van chat)) thuc va hanh sai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y nang x hoi. thien ((van tham) OR (van chat)) thuc va hanh sai cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang x hoi. thien ((van tham) or (van chat)) thuc va hanh sai cua te*.