Perhaps you should try some spelling variations:
dong vai » dong tai, dong va, dong vat
thuc day » thuc dan
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
nang xa » nang x, lang xa, nang ma
dan ky » van ky
tu dan » tuc dan, tu ban, cu dan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky ((nang xa) OR (tang ma)) hoi. hieu va chat ((thuc day) OR (thuc vat)) dong vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky ((nang xa) or (tang ma)) hoi. hieu va chat ((thuc day) OR (thuc vat)) dong vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu dan ky ((nang xa) or (tang ma)) hoi. hieu va chat ((thuc day) OR (thuc vat)) dong vai cua tre*.