Perhaps you should try some spelling variations:
nguoi san » nguoi tay, nguoi dao, nguoi ma
san hanh » san thanh, ban hanh, van hanh
cua tre » cuu tre, cua triet, dua tren
hanh di » hanh vi, hanh de, hang di
su sac » su sach, su cac, su xac
de tai » de thi, te tai
sac ky » cac ky, sai ky
de tac » de tao, ve tac, da tac
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 ((de tac) OR (de tai)) nguoi san hanh 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 ((de tac) OR (de tai)) nguoi san hanh 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 ((de tac) OR (de tai)) nguoi san hanh di ((cua tre) or (cua te))*".