Perhaps you should try some spelling variations:
nguoi san » nguoi tay, nguoi dao, nguoi ma
cap nguoi » ca nguoi, gap nguoi, giap nguoi
san hanh » san thanh, ban hanh, van hanh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
su sac » su sach, su xac
ma hoi » mai hoi, xa hoi, ma hoa
su cac » tu cac, su cao, su can
ve cap » ve cac, le cap, ve cai

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 cap nguoi san hanh vi ((cua tre) 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 cap nguoi san hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) or (su cac)) ky nang ma hoi. hieu ve cap nguoi san hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky nang ma hoi. hieu ve cap nguoi san hanh vi ((cua tre) OR (cuu tre))*.