Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
cham duc » pham duc, cham soc, pham duy
sang tay » sang tao, sang tai, sang tac
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
tu cach » tu cac
hieu ve » hieu van
tay hoi » tay ho, tao hoi, tay thai
ky sang » ky nang, ky dang, ky tang
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 sang tay hoi. ((hieu ve) OR (hieu va)) cham duc ban thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (bo sach)) ky sang tay hoi. ((hieu ve) OR (hieu va)) cham duc ban thanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (bo sach)) ky sang tay hoi. ((hieu ve) OR (hieu va)) cham duc ban thanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (bo sach)) ky sang tay hoi. ((hieu ve) OR (hieu va)) cham duc ban thanh vi cua triet*.