Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va triet » va thiet, va trien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
van chat » cao chat
luc ban » duc ban, cuc ban, luc bat
van cau » van dau, van hau, toan cau
mai hoi » mai khoi, dai hoi, lai hoi
xac ky » cac ky, sac ky, bac ky
ma hoi » xa hoi, ma hoa, me hoi
su xac » pu xac, su cac
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky nang ((ma hoi) or (mai hoi)). thien ((van cau) OR (van chat)) luc ban thanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky nang ((ma hoi) OR (mai hoi)). thien ((van cau) OR (van chat)) luc ban thanh vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ky nang ((ma hoi) or (mai hoi)). thien ((van cau) OR (van chat)) luc ban thanh vi va triet".
• Adding a wildcard symbol may retrieve word variants: su xac ky nang ((ma hoi) or (mai hoi)). thien ((van cau) OR (van chat)) luc ban thanh vi va triet*.