Perhaps you should try some spelling variations:
vat dung » van dung, va dung, viet dung
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
dung co » dung cho, dung cong, dung cua
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay
nam tu » nam thu, nam thuc
tu vat » tu va, tu van, tu bat
co cua » con cua, ca cua, cong cua

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 ((dang xa) or (lang xa)) hoi. hieu va nam tu vat dung co cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky ((dang xa) OR (lang xa)) hoi. hieu va nam tu vat dung co cua tre*.