Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
luoc van » luoc can, luoc va, luc van
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
xay hoi » xa hoi, tay hoi, cay phoi
van tom » van tam, van toi, van toa
ty van » ly van
ta van » tan van, tap van, va van
cua te » cua tu

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 ((ty van) OR (ta van)) xay hoi. hieu van tom luoc van hanh vi ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty van) OR (ta van)) xay hoi. hieu van tom luoc van hanh vi ((cua te) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty van) OR (ta van)) xay hoi. hieu van tom luoc van hanh vi ((cua te) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty van) OR (ta van)) xay hoi. hieu van tom luoc van hanh vi ((cua te) or (cua triet))*.