Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
mai khoi » mai khoa, tai khoa, cac khoi
va thanh » gia thanh, ban thanh, va tinh
hai cua » thai cua, dai cua, hoi cua
va pham » van pham, va phat, va phap
hieu va » lieu va, hieu qua
te sach » toc sach
lai hoa » dai hoa, loai hoc
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) ((lai hoa) OR (mai khoi)). hieu va pham duc va thanh hai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) ((lai hoa) or (mai khoi)). hieu va pham duc va thanh hai cua triet~".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) ((lai hoa) or (mai khoi)). hieu va pham duc va thanh hai cua triet*.