Perhaps you should try some spelling variations:
lam nguoi » dao nguoi
tay nguoi » toc nguoi, dao nguoi
benh hoc » sinh hoc
hach hoc » cach hoc, mach hoc, hoach hoi
tu benh » tru benh, thu benh, tuy benh
hoc lam » duoc lam
tu hach » tu hanh, tu cach, tu sach
hoc tay » toc tay, hoc tap, hoc may

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu benh hoc lam nguoi ) or ( tu hach hoc tay nguoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu benh hoc lam nguoi ) OR ( tu hach hoc tay nguoi )).
• Adding a wildcard symbol may retrieve word variants: (( tu benh hoc lam nguoi ) or ( tu hach hoc tay nguoi ))*.