Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
luu ban » luu bang, luu van, luu dan
nang xa » nang x, lang xa, mang xa
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
tam luu » ta luu, tam buu
va tam » van tam, va tham, va tac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky ((nang xa) or (nang ma)) hoi. hieu va tam luu ban hanh vai ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((nang xa) OR (nang ma)) hoi. hieu va tam luu ban hanh vai ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky ((nang xa) or (nang ma)) hoi. hieu va tam luu ban hanh vai ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((nang xa) or (nang ma)) hoi. hieu va tam luu ban hanh vai ((cua triet) OR (va triet))*.