Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nang mai » nang ma, nang tai, nang cai
lang mai » lang dai, lang hai, lang man
tham tuc » tham thuc, thai tuc, nham thuc
va tham » van tham, va cham, va thanh
dan dai » dat dai, can dai, dan dat
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: thuoc sach y ((nang mai) or (lang mai)) hoi. lieu va tham tuc va dan dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang mai) OR (lang mai)) hoi. lieu va tham tuc va dan dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((nang mai) or (lang mai)) hoi. lieu va tham tuc va dan dai cua tre*.