Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
lap cua » lai cua, tap cua, lam cua
luc gia » luoc gia, duc gia, quoc gia
xuc gia » duc gia, tuc gia, quoc gia
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
o hoc » co hoc, mo hoc, so hoc
o hoi » co hoi, o hai, o hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang ((o hoi) OR (o hoc)). hieu ve cam ((xuc gia) or (luc gia)) thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang ((o hoi) OR (o hoc)). hieu ve cam ((xuc gia) OR (luc gia)) thanh lap cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang ((o hoi) OR (o hoc)). hieu ve cam ((xuc gia) or (luc gia)) thanh lap cua triet*".