Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
chieu ke » hieu ky, hieu ve, hieu kem
hanh tu » anh tu, danh tu
hanh vu » hanh vi, hanh va, hanh ve
cau luc » cau truc, cau phuc
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
ma hoi » xa hoi, ma hoa, me hoi
ke cau » ket cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ((ma hoi) or (mai hoi)). chieu ke cau luc va ((hanh vu) OR (hanh tu)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoi) OR (mai hoi)). chieu ke cau luc va ((hanh vu) OR (hanh tu)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((ma hoi) or (mai hoi)). chieu ke cau luc va ((hanh vu) OR (hanh tu)) va triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) or (mai hoi)). chieu ke cau luc va ((hanh vu) OR (hanh tu)) va triet*.