Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sang tao » hang tai
tham tuc » tham thuc, thai tuc, nham thuc
tang ma » mang may, tang van
va tham » van tham, va cham, va thanh
dan vai » dan va, dan tai, dan vat
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau

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 y ((tang ma) or (sang tao)) hoi. lieu va tham tuc va dan vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((tang ma) OR (sang tao)) hoi. lieu va tham tuc va dan vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y ((tang ma) or (sang tao)) hoi. lieu va tham tuc va dan vai cua tre*.