Perhaps you should try some spelling variations:
muong dai » duong dai, mung dai, tuong dai
xa muong » ca muong, xa truong, xa dong
vu sach » vu bach, su sach, vu khach
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ky tang) OR (ky nang)) xa hoi. ((hieu ve) or (lieu va)) cam tuc xa muong dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky tang) OR (ky nang)) xa hoi. ((hieu ve) OR (lieu va)) cam tuc xa muong dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky tang) OR (ky nang)) xa hoi. ((hieu ve) or (lieu va)) cam tuc xa muong dai cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky tang) OR (ky nang)) xa hoi. ((hieu ve) or (lieu va)) cam tuc xa muong dai cua tre*.