Perhaps you should try some spelling variations:
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
cua tre » cuu tre, cua triet, dua tren
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
ve cac » va cac, vien cac
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky dang xa hoi. hieu ve cac duc ((va hanh) or (va danh)) vai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky dang xa hoi. hieu ve cac duc ((va hanh) OR (va danh)) vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky dang xa hoi. hieu ve cac duc ((va hanh) or (va danh)) vai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: so sanh ky dang xa hoi. hieu ve cac duc ((va hanh) or (va danh)) vai ((cua tre) OR (cua te))*.