Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc dang » thuoc dung, thuoc khang, thuc dan
thuat dung » thuat hung, thuat ung, thuat xung
phau thong » phap thong, khau thong, phan thong
sach tham » sach nha
dang khoa » hang khoa, dang khoi, dong khoa
khoa khoi » khoa hoi, khoa khoa, thoat khoi
dung khoa » dung cho
khoa phau » hoa phan, khoa kham, khoa than
ki thuat » ky thuat
tu sach » thu sach, su sach, tu cach
te sach » toc sach
sach ki » sach kinh, sach bai, sach kem
khong » phong

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 tham thuoc dang khoa khoi khong ) or ( te sach ki thuat dung khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham thuoc dang khoa khoi khong ) OR ( te sach ki thuat dung khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tham thuoc dang khoa khoi khong ) or ( te sach ki thuat dung khoa phau thong ))*.