Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toan hanh » toan thanh, toan anh, tran hanh
ve triet » va trien, su triet
duc toan » duc tan, duc ton, duc hoan
phan duc » pham duc, phan tu, phan dau
sach ky » sac ky, sach y, sach ty
hanh va » hang va, hanh vi
te sach » toc sach
hieu ve » hieu va, hieu van
dung ha » dung va, dung he, dung khoa
dang ha » dong ha, lang ha, tang ha
ve phan » va phan, ke phan, ve phat

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 ((dang ha) or (dung ha)) hoi. hieu ve phan duc toan hanh va ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dang ha) OR (dung ha)) hoi. hieu ve phan duc toan hanh va ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky ((dang ha) or (dung ha)) hoi. hieu ve phan duc toan hanh va ((cua triet) or (ve triet))*.