Perhaps you should try some spelling variations:
cai nguoi » ca nguoi, coi nguoi, cuoi nguoi
nguoi va » nguoi ma, nguoi tay, nguoi dao
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
cua te » cua tu
su sac » su sach, su xac
ma hoi » mai hoi, xa hoi, ma hoa
su cac » tu cac, su cao, su can
ve cai » va cai, ve cac, ve tai

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) or (su cac)) ky nang ma hoi. hieu ve cai nguoi va hanh vi ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky nang ma hoi. hieu ve cai nguoi va hanh vi ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky nang ma hoi. hieu ve cai nguoi va hanh vi ((cua te) or (cuu tre))*.