Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tang tao » sang tao, tang tai, nang tao
tinh vi » trinh vi, tinh voi, tinh va
duc may » duc mau, duc man, duc manh
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
tu cach » tu cac
tao hoi » tao khoi, tao boi, tay hoi
ky tang » ky nang, ky dang, kho tang
su sach » so sach, vu sach
hieu ve » hieu van
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 (su sach)) ky tang tao hoi. ((hieu ve) OR (hieu va)) cam duc may tinh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky tang tao hoi. ((hieu ve) OR (hieu va)) cam duc may tinh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky tang tao hoi. ((hieu ve) OR (hieu va)) cam duc may tinh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky tang tao hoi. ((hieu ve) OR (hieu va)) cam duc may tinh vi cua triet*.