Perhaps you should try some spelling variations:
dung cong » dung trong
cong cua » cong cu, dong cua, huong cua
bat dung » bat dong, vat dung, ban dung
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang va
dang ha » dong ha, dung ha, tang ha
lang ha » long ha
tu bat » tu ban, tu dat
nam tu » nam thu, nam thuc
so sac » so sach, so dac
ve nam » he nam, va nam, le nam
sac ky » cac ky, sai ky

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