Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
song xa » song cua
sang xa » lang xa, sang ma, mang xa
sach tu » sach thu, cach tu, sach ty
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu ((sang xa) or (song xa)) hoi. hieu van cam duc va hanh lai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((sang xa) OR (song xa)) hoi. hieu van cam duc va hanh lai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu ((sang xa) or (song xa)) hoi. hieu van cam duc va hanh lai ((cua tre) OR (cua triet))*".