Perhaps you should try some spelling variations:
thuc nguoi » toc nguoi
nguoi san » nguoi tay, nguoi dao, nguoi ma
hang di » hang doi, hang vi, hang dien
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
ve thuc » va thuc
hanh di » hanh vi, hanh de, danh di
su sac » su sach, su cac, su xac
sac ky » cac ky, sai 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 sac ky nang x hoi. hieu ve thuc nguoi san ((hanh di) OR (hang di)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x hoi. hieu ve thuc nguoi san ((hanh di) OR (hang di)) ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang x hoi. hieu ve thuc nguoi san ((hanh di) OR (hang di)) ((cua tre) or (cua te))*".