Perhaps you should try some spelling variations:
nang thuoc » dang thuoc, nang thuc, sang thuoc
dao nguoi » cho nguoi
tay nguoi » toc nguoi
loi nguoi » loai nguoi, moi nguoi, doi nguoi
thi nang » thi cong, ki nang, thi hanh
thu sach » tu sach, thuat sach, thuoc sach
dung loi » duong loi, dung loai, dung doi

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

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