Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
cham luan » pham luan, ham luan, phap luan
thanh di » thanh doi, thanh de, thanh do
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
hieu va » lieu va, hieu qua
te sach » toc sach
lang ha » long ha
lang xa » dang xay, lang van
di cua » dai cua, doi cua, de cua

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 ky ((((lang xa) or (nang x))) or (lang ha)) hoi. hieu va cham luan van thanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((((lang xa) OR (nang x))) OR (lang ha)) hoi. hieu va cham luan van thanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((((lang xa) or (nang x))) or (lang ha)) hoi. hieu va cham luan van thanh di cua triet*.