Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
sach thu » sach thue, sach tham, cach thuc
hieu van » hieu va, thien van, lieu va
thuoc va » thuc va, thuoc ma, thuong va
bang xa » lang xa, bang va, mang xa
van lam » van nam
dan sai » danh sai, doan sai, dan tai
sai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
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: thu ((sach thu) or (sach thieu)) bang xa hoi. hieu van lam thuoc va dan sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach thu) OR (sach thieu)) bang xa hoi. hieu van lam thuoc va dan sai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach thu) or (sach thieu)) bang xa hoi. hieu van lam thuoc va dan sai cua tre*.