Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
tu cach » tu cac
nang xa » nang x, lang xa, mang xa
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
va cam » va cham, va cac, va cao
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 (te sach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cam duc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cam duc va hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cam duc va hanh vi cua triet*".