Perhaps you should try some spelling variations:
khac thuong » hoc thuong, phan thuong, pham thuong
thuoc dang » thuoc dung, thuoc khang, thuc dan
thu thuoc » tu thuoc, thu thuc, tru thuoc
dang khoa » dung khoa, hang khoa, dang khoi
khoa khac » khoa kham, khoanh khac, khoa hoc
tri thuat » trien thuat, ki thuat, tri thuc
thuat anh » thuat lanh, thuat canh, thuat nganh
cach thu » cach thuc, cac thu, cach tu
sach tri » sach tai, sach tren, sach truc
anh khoa » doanh khoa, hang khoa
ve cach » va cach, ve cac, ve canh
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ve cach thu thuoc dang khoa khac thuong ) or ( te sach tri thuat anh khoa khac thuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ve cach thu thuoc dang khoa khac thuong ) OR ( te sach tri thuat anh khoa khac thuong )).
• Adding a wildcard symbol may retrieve word variants: (( ve cach thu thuoc dang khoa khac thuong ) or ( te sach tri thuat anh khoa khac thuong ))*.