Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc bach » thuoc sach, thuoc ban, truc bach
khau thong » khau thuong, khau tong, khac thuong
khap thong » phap thong, khac thuong, chap thuong
sach tham » sach nha
toc sach » hoc sach, doc sach, thuoc sach
bach hoa » bach khoa, bach ha, cach hoan

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 bach hoa ((khau thong) OR (khap thong))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach tham thuoc bach hoa ((khau thong) OR (khap thong))*".