Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam
xang x » nang x
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: ((te sach) or (hoc sach)) ty xang x hoi. hieu ((ve cam) or (va cac)) tuc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (hoc sach)) ty xang x hoi. hieu ((ve cam) OR (va cac)) tuc va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc sach)) ty xang x hoi. hieu ((ve cam) or (va cac)) tuc va hanh vai cua te*.