Perhaps you should try some spelling variations:
thoi thuoc » phoi thuoc, choi thuc, hoc thuoc
thuoc hang » thuoc khang, thuoc dang, thuoc bang
phan thong » phan thuong, phan hong, phan tong
thuoc sinh » hoc sinh, thu sinh, thuoc sach
cach thoi » cac thoi, cach thuc, cach noi
hang khoa » dung khoa
khoa phan » hoa phan, khoa than, khoa phau
tai thuoc » tri thuoc, bai thuoc, tac thuoc
sinh hoat » sinh hoc, sinh vat
sach tai » sach bai, sach tham, sach dao
tu cach » tu cac
su sach » so sach, vu sach
hoat he » hoa he, hoat ho, thuat he

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cach thoi thuoc hang khoa phan thong ) or ( su sach tai thuoc sinh hoat he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thoi thuoc hang khoa phan thong ) OR ( su sach tai thuoc sinh hoat he thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cach thoi thuoc hang khoa phan thong ) or ( su sach tai thuoc sinh hoat he thong ))*.