Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc cach » thuoc sach, thuc cach, truoc cach
khau thong » khau thuong, khau tong, khac thuong
khap thong » phap thong, khac thuong, chap thuong
sach tham » sach nha
cach hoan » cac khoan, hach toan, sach han
toc sach » hoc sach, doc sach, thuoc sach

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 tham thuoc cach hoan ((khau thong) or (khap thong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tham thuoc cach hoan ((khau thong) OR (khap thong))*.