Perhaps you should try some spelling variations:
khang loi » khang voi, thang loi, hang loi
van khang » van khanh, van thanh, van quang
hieu van » thien van, lieu va, hieu ve
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
loi cua » loai cua, hoi cua, doi cua
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua

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 sach ty ((mang xa) OR (lang xa)) hoi. ((hieu van) OR (hieu va)) cam luc van khang loi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((mang xa) or (lang xa)) hoi. ((hieu van) OR (hieu va)) cam luc van khang loi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((mang xa) or (lang xa)) hoi. ((hieu van) OR (hieu va)) cam luc van khang loi cua tre*.