Perhaps you should try some spelling variations:
lang thang » cang thang, dang thanh, hung thang
doi chieu » doc hieu, doi chi, mot chieu
dung thuc » dung thuoc, duong thuc, dung thu
thuc dang » thuoc dang, thuc dan, thuc dung
dang cong » dung cong
cong lang » cong vang, cong luong, cong quang
thang van » tang van, thanh van, thong van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) xanh - sach dung thuc dang cong lang thang van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) xanh - sach dung thuc dang cong lang thang van*.