Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc dang » thuoc dung, thuoc khang, thuc dan
dang khoan » dang khoa, dung khoa, hang khoa
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
thuc dung » thuoc dung, thuy dung, tuc dung
hoc thong » hoc thuong, hoc trong, hoc hong
sach tham » sach nha
dung hoa » dung khoa, duong hoa, dung hoai
tu sach » thu sach, su sach, te sach
sach am » sach dao, sach bai, sach cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach am thuc dung hoa hoc thong ) or ( tu sach tham thuoc dang khoan phai thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach am thuc dung hoa hoc thong ) OR ( tu sach tham thuoc dang khoan phai thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach am thuc dung hoa hoc thong ) or ( tu sach tham thuoc dang khoan phai thong ))*.