Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sinh » hoc sinh, thu sinh, thuoc sach
thuoc dang » thuoc dung, thuoc khang, thuc dan
sach tham » sach nha
sinh khoa » sinh hoc, sinh hoat, anh khoa
pho thong » he thong
tri thuoc » tri thuc, tri hoc, tin thuoc
dang khoi » dung khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
sach tri » sach tai, sach tren, sach truc
khoi pho » khoi tho, khoi khoa, hoc pho
tu sach » thu sach, su sach, te sach

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