Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nang tao » nang cao, sang tao, nang tai
pham duy » pham duc
thanh va » thanh van, hanh va, thanh ha
va triet » va thiet, va trien, ve triet
tu cach » tu cac
co sach » bo sach, cuon sach, hoc sach
tao hoi » tao khoi, tao boi, tay hoi
hieu vi » hieu voi, hieu va, hieu ve
duy ban » uy ban, duy van, duy can
va va » va van, va vua, va vai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (co sach)) ky nang tao hoi. hieu vi pham duy ban thanh va va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (co sach)) ky nang tao hoi. hieu vi pham duy ban thanh va va triet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (co sach)) ky nang tao hoi. hieu vi pham duy ban thanh va va triet*.