Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cach thuc » anh thuc
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cac thu » cac thoi
vu sach » vu bach, su sach, vu khach
ly vang » ly hang, ly van, ly quang
ly nang » ky nang, ly hang, ly quang
vi cua » vai cua, di cua

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 ((ly nang) or (ly vang)) x ho. hieu ve ((cac thu) or (cach thuc)) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ly nang) OR (ly vang)) x ho. hieu ve ((cac thu) OR (cach thuc)) va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ly nang) or (ly vang)) x ho. hieu ve ((cac thu) or (cach thuc)) va hanh vi cua triet*.