Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
don vai » don vi, don va, den vai
day don » day dong, day con, day dan
va chat » van chat, va phat, hoa chat
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.

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky ((nang xa) or (tang ma)) hoi. hieu ((va chat) or (cao chat)) thuc day don vai cua tre~.
• 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) OR (cao chat)) thuc day don vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu dan ky ((nang xa) or (tang ma)) hoi. hieu ((va chat) or (cao chat)) thuc day don vai cua tre*.