Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh dai » thanh hai, thanh tai, thanh dat
cua thuoc » nha thuoc, cay thuoc, cua nuoc
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
pham thu » pham thuc, pham thi, pham tu
te sach » toc sach
lang xa » lang ha, lang van
thu van » thuc van, thuy van, tu van

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 y ((lang xa) or (dang xay)) hoi. hieu van pham thu van thanh dai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (dang xay)) hoi. hieu van pham thu van thanh dai cua thuoc.
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (dang xay)) hoi. hieu van pham thu van thanh dai cua thuoc*.