Perhaps you should try some spelling variations:
tay nguoi » toc nguoi, dao nguoi
hach hoc » cach hoc, mach hoc, hoach hoi
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
li nguoi » loi nguoi, le nguoi, ly nguoi
tu hach » tu hanh, tu cach, tu sach
hoc tay » toc tay, hoc tap, hoc may
nuoc li » duoc li, nuoc oi, nguoc lai

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

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