Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
sang ma » tang ma, nang ma, sang tao
hoc cac » hoc cao
lap cua » lai cua, tap cua, lam cua
hieu ve » hieu va, hieu van
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (hoc cac)) y sang ma hoi. hieu ve ((pham duy) or (pham duc)) gia thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc cac)) y sang ma hoi. hieu ve ((pham duy) OR (pham duc)) gia thanh lap cua triet.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc cac)) y sang ma hoi. hieu ve ((pham duy) or (pham duc)) gia thanh lap cua triet*.