Perhaps you should try some spelling variations:
van khang » van khanh, van thanh, van quang
khang loi » khang voi, thang loi, hang loi
hieu van » hieu va, thien van, lieu va
dang xay » dang van, van xay
xuc van » duc van, luc van, vuc van
cuu tre » cau tren, cau treo
tu sach » thu sach, su sach, te sach
nam xuc » cam xuc, nam xua, nam thuc
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cua triet, dua tren

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang xa) or (dang xay)) hoi. hieu van nam xuc van khang loi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (dang xay)) hoi. hieu van nam xuc van khang loi ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (dang xay)) hoi. hieu van nam xuc van khang loi ((cuu tre) or (cua tre))*.