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 di » thanh doi, thanh de, thanh do
pham duy » pham duc
voi pham » vi pham, toi pham, loai pham
nang tao » nang cao, sang tao, nang tai
tao hoi » tao khoi, tao boi, tay hoi
bo sach » co sach, hoc sach
duy ban » uy ban, duy van, duy can
di cua » dai cua, doi cua, de 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 (tu cac))) or (bo sach)) ky nang tao hoi. hieu voi pham duy ban thanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu cach) OR (tu cac))) OR (bo sach)) ky nang tao hoi. hieu voi pham duy ban thanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu cach) OR (tu cac))) or (bo sach)) ky nang tao hoi. hieu voi pham duy ban thanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: ((((tu cach) OR (tu cac))) or (bo sach)) ky nang tao hoi. hieu voi pham duy ban thanh di cua triet*.