Perhaps you should try some spelling variations:
lan thuoc » ban thuoc, lam thuoc, dang thuoc
lam nguoi » dao nguoi
tay nguoi » toc nguoi, dao nguoi
thu sach » tu sach, thuat sach, thuoc sach
dung lam » dung luan, dung tai, dung dat
thi lan » thi hanh, thi nang, thi lien
dung ly » dung le, dung la, dung may

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thi lan thuoc ((lam nguoi) or (tay nguoi)) ) or ( thu sach ((dung ly) OR (dung lam)) nguoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thi lan thuoc ((lam nguoi) OR (tay nguoi)) ) OR ( thu sach ((dung ly) OR (dung lam)) nguoi )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thi lan thuoc ((lam nguoi) or (tay nguoi)) ) or ( thu sach ((dung ly) OR (dung lam)) nguoi ))".
• Adding a wildcard symbol may retrieve word variants: (( thi lan thuoc ((lam nguoi) or (tay nguoi)) ) or ( thu sach ((dung ly) OR (dung lam)) nguoi ))*.