Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
hieu van » hieu va, thien van, lieu va
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
cu tren » tu tren, dua tren
luc ban » duc ban, cuc ban, luc bat
cac luc » cau luc, coc luc, cac nuoc
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. hieu van cac luc ban thanh di ((cua tre) or (((cuu tre) or (cu tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu van cac luc ban thanh di ((cua tre) OR (((cuu tre) OR (cu tren)))).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu van cac luc ban thanh di ((cua tre) or (((cuu tre) or (cu tren))))*.