Perhaps you should try some spelling variations:
thuc nguoi » toc nguoi
nguoi san » nguoi tay, nguoi dao, nguoi ma
san hanh » san thanh, ban hanh, van hanh
hieu ve » hieu va, hieu van
ve thuc » va thuc
hanh di » hanh vi, hanh de, hang di
cua tre » cuu tre, cua triet, dua tren
xac ky » sac ky, bac ky
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((xac ky) OR (cac ky)) nang x hoi. hieu ve thuc nguoi san hanh di ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((xac ky) OR (cac ky)) nang x hoi. hieu ve thuc nguoi san hanh di ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((xac ky) OR (cac ky)) nang x hoi. hieu ve thuc nguoi san hanh di ((cua tre) or (cua te))*".