Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh le » thinh le, thanh ve, thanh de
hieu van » hieu va, thien van, lieu va
toc sach » hoc sach, doc sach, thuoc sach
van hat » van chat, van phat, van hoat
luu van » cuu van, luan van, luu hanh
nang xa » lang xa, nang ma, mang xa
hanh ve » hanh vi, hanh va, hanh kem
hat luu » chat huu, chat lua, phap luu

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 y ((nang xa) or (nang x)) hoi. hieu van hat luu van ((thanh le) or (hanh ve)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((nang xa) OR (nang x)) hoi. hieu van hat luu van ((thanh le) OR (hanh ve)) cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach y ((nang xa) or (nang x)) hoi. hieu van hat luu van ((thanh le) or (hanh ve)) cua triet*.