Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cua triet » cua viet, su triet, va triet
thi hang » thi hanh, thi hong, thi thanh
thi nang » thi cong, ki nang, thi hanh
hieu van » hieu va, thien van, hieu ve
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, x ho

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 ((thi hang) or (thi nang)) x hoi. ((hieu van) OR (lieu va)) coc luc va thanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thi hang) OR (thi nang)) x hoi. ((hieu van) OR (lieu va)) coc luc va thanh hai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thi hang) or (thi nang)) x hoi. ((hieu van) OR (lieu va)) coc luc va thanh hai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((thi hang) or (thi nang)) x hoi. ((hieu van) OR (lieu va)) coc luc va thanh hai cua triet*.