Perhaps you should try some spelling variations:
thanh dam » thanh dat, thanh nam, thanh tam
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
sach phu » sach thu, sach phat, sach thue
phu lang » phap lang, phu khang, phu luong
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
cua tre » cua te, cuu tre, 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 phu lang xa hoi. hieu van cam tuc van thanh dam ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach phu lang xa hoi. hieu van cam tuc van thanh dam ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach phu lang xa hoi. hieu van cam tuc van thanh dam ((cua tre) or (cua triet))*.