Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
hieu voi » hieu moi, lieu voi, hieu loi
thanh vi » hanh vi, thanh va, thanh ve
nang tao » nang cao, sang tao, nang tai
pham duy » pham duc
duy ban » uy ban, duy van, duy can
tu cach » tu cac
hieu vi » hieu va, hieu ve, hien vi
tao hoi » tao khoi, tao boi, tay hoi
bo sach » co sach, hoc sach
vi cua » vai cua, di cua

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 (bo sach)) ky nang tao hoi. ((hieu vi) OR (hieu voi)) pham duy ban thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (bo sach)) ky nang tao hoi. ((hieu vi) OR (hieu voi)) pham duy ban thanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (bo sach)) ky nang tao hoi. ((hieu vi) OR (hieu voi)) pham duy ban thanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (bo sach)) ky nang tao hoi. ((hieu vi) OR (hieu voi)) pham duy ban thanh vi cua triet*.