Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
so sanh » do sanh
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
sanh ky » hanh ky, sang ky, nganh ky
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cac » vien cac
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: so sanh ky lang xa hoi. hieu ((ve cac) or (va cac)) duc ((van hanh) or (va danh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky lang xa hoi. hieu ((ve cac) OR (va cac)) duc ((van hanh) OR (va danh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sanh ky lang xa hoi. hieu ((ve cac) or (va cac)) duc ((van hanh) or (va danh)) vi cua tre*.