Perhaps you should try some spelling variations:
muong doong » muong duong, tuong duong, cuong duong
muong dong » muong duong, tuong dong, huong dong
so sanh » do sanh
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
sanh ky » hanh ky, sang ky, nganh ky
cua tre » cua te, cuu tre, cua triet
va cam » va cac, va cao, va cai
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. lieu ((va cam) OR (va cham)) tuc xa ((muong dong) or (muong doong)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky nang ma hoi. lieu ((va cam) OR (va cham)) tuc xa ((muong dong) OR (muong doong)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang ma hoi. lieu ((va cam) OR (va cham)) tuc xa ((muong dong) or (muong doong)) cua tre".
• Adding a wildcard symbol may retrieve word variants: so sanh ky nang ma hoi. lieu ((va cam) OR (va cham)) tuc xa ((muong dong) or (muong doong)) cua tre*.