Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
lam thuoc » nam thuoc, am thuc, cay thuoc
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
van lam » van nam
xu tre » xu tri

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 ty) or (sach thu)) lang xa hoi. hieu van lam thuoc va thanh gian xu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach thu)) lang xa hoi. hieu van lam thuoc va thanh gian xu tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) or (sach thu)) lang xa hoi. hieu van lam thuoc va thanh gian xu tre*.