Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, hieu ve
cau phuc » cau truc, chau phu, huu phuc
bach ky » bac ky
mai hoi » mai khoi, dai hoi, lai hoi
phuc va » phuc vu, thuc va, chuc va
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
de cua » le cua, te cua, dieu 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 bach ky nang ((xa hoi) or (mai hoi)). ((hieu van) OR (lieu va)) cau phuc va hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky nang ((xa hoi) OR (mai hoi)). ((hieu van) OR (lieu va)) cau phuc va hanh de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach ky nang ((xa hoi) or (mai hoi)). ((hieu van) OR (lieu va)) cau phuc va hanh de cua triet*".