Perhaps you should try some spelling variations:
tay nguoi » dao nguoi, lam nguoi, ca nguoi
toc nguoi » con nguoi
sach hoc » cach hoc, mach hoc, sach duoc
sach hoi » sach doi, sach moi, cach thoi
te sach » toc sach
hoc tay » toc tay, hoc tap, hoc may
tu sach » thu sach, su sach, tu cach
hoi toc » hoi hoc, ho toc, hoa toc

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

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