Perhaps you should try some spelling variations:
cach truc » cach thuc, cau truc, cach tu
may nguoi » ma nguoi, lay nguoi, mac nguoi
tay nguoi » toc nguoi, dao nguoi, lam nguoi
truc may » tren may, truc va
sach hoc » cach hoc, sach hoi, mach hoc
tu cach » tu cac
su sach » so sach, vu 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 cach truc may nguoi ) or ( su sach hoc tay nguoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach truc may nguoi ) OR ( su sach hoc tay nguoi )).
• Adding a wildcard symbol may retrieve word variants: (( tu cach truc may nguoi ) or ( su sach hoc tay nguoi ))*.