Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
hanh cua » manh cua, hang cua, hanh sua
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
cau luc » cau truc, cau phuc
cua cua » cua chua, ca cua, qua cua

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) OR (co sach)) ky nang xa hoi. hieu van ((cau luc) or (cam xuc)) ban hanh cua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ky nang xa hoi. hieu van ((cau luc) OR (cam xuc)) ban hanh cua cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) ky nang xa hoi. hieu van ((cau luc) or (cam xuc)) ban hanh cua cua triet*".