Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh cua » manh cua, hang cua, hanh sua
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
cau luc » cau truc, cau phuc
cua cua » cua chua, ca cua, qua cua
so sach » so sanh, bo sach, co sach
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((ky lang) OR (ky tang)) xa hoi. hieu van ((cau luc) or (cam xuc)) van hanh cua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky lang) OR (ky tang)) xa hoi. hieu van ((cau luc) OR (cam xuc)) van hanh cua cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky lang) OR (ky tang)) xa hoi. hieu van ((cau luc) or (cam xuc)) van hanh cua cua triet*".