Perhaps you should try some spelling variations:
khau thong » khau thuong, khau tong, khac thuong
thuoc sach » hoc sach, nuoc sach, thuat sach
khap thong » phap thong, khac thuong, chap thuong
bai thuoc » ban thuoc, bai hoc, cay thuoc
thuoc anh » thuoc thanh, thuoc dang, thuoc sinh
sach bai » sach dao, cac bai, sach xa
anh khoa » doanh khoa, hang khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach bai thuoc anh khoa ((khau thong) OR (khap thong))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach bai thuoc anh khoa ((khau thong) OR (khap thong))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach bai thuoc anh khoa ((khau thong) OR (khap thong))*.