Perhaps you should try some spelling variations:
muong dai » duong dai, mung dai, tuong dai
xa muong » ca muong, xa truong, xa dong
cua tre » cua te, cuu tre, cua triet
cam tuc » cam xuc, nam thuc, dam thuc
hieu ve » hieu va, hieu van
cam tu » cam thu, nam tu, dam tu
so sac » so sach, so dac
ma hoi » mai hoi, xa hoi, me hoi
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang ((ma hoi) OR (ma hoa)). hieu ve ((cam tuc) or (cam tu)) xa muong dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang ((ma hoi) OR (ma hoa)). hieu ve ((cam tuc) OR (cam tu)) xa muong dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang ((ma hoi) OR (ma hoa)). hieu ve ((cam tuc) or (cam tu)) xa muong dai cua tre*".