Perhaps you should try some spelling variations:
doanh duoc » doanh cuoc, doanh quoc, dong duoc
gap nguoi » gian nguoi, dao nguoi, tay nguoi
toc nguoi » con nguoi
lam nguoi » dao nguoi, tay nguoi
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
tu doanh » su doanh, te doanh, ty doanh
duoc lam » duoc pham, duoc ly, duoc li

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

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