Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
suc van » su van, duc van, sac van
luc van » luoc van, luu van, duc van
lap cua » lai cua, tap cua, lam cua
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ((ma hoi) or (ma hoa)). hieu ve cao ((suc van) OR (luc van)) thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((ma hoi) OR (ma hoa)). hieu ve cao ((suc van) OR (luc van)) thanh lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((ma hoi) or (ma hoa)). hieu ve cao ((suc van) OR (luc van)) thanh lap cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((ma hoi) or (ma hoa)). hieu ve cao ((suc van) OR (luc van)) thanh lap cua triet*.