Perhaps you should try some spelling variations:
thien van » thi van
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
luc ban » duc ban, cuc ban, luc bat
cau luc » cau truc, cau phuc
van cau » van dau, van hau, van chat
mai hoi » mai khoi, dai hoi, lai hoi
su sach » so sach, vu sach
ma hoi » xa hoi, ma hoa, me hoi
su sac » su cac, su xac
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 sac) OR (su sach)) ky nang ((ma hoi) or (mai hoi)). thien van cau luc ban hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su sach)) ky nang ((ma hoi) OR (mai hoi)). thien van cau luc ban hanh vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su sach)) ky nang ((ma hoi) or (mai hoi)). thien van cau luc ban hanh vi va triet".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su sach)) ky nang ((ma hoi) or (mai hoi)). thien van cau luc ban hanh vi va triet*.