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

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 san hanh vi cua 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 san hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky nang ma hoi. hieu ve cai nguoi san hanh vi cua tre*.