Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
va hanh » va thanh, va danh, ban hanh
lang xa » lang ha, dang xay, lang van
va thai » van thai, va tham, va thi
vai cua » dai cua, hai cua, lai cua
ky lang » ky nang, ky dang, ky tang
ve cac » va cac, vien cac
va tai » va tac, va tap

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

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