Perhaps you should try some spelling variations:
vat dung » van dung, va dung, viet dung
cua tre » cua te, cuu tre, cua triet
cho cua » co cua, chi cua, cho ca
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
nam tu » nam thu, nam thuc
tu vat » tu va, tu van, tu bat
so sac » so sach, so dac

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 xa) OR (nang ma)) hoi. ((hieu ve) or (lieu va)) nam tu vat dung cho cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (lieu va)) nam tu vat dung cho cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (lieu va)) nam tu vat dung cho cua tre*".