Perhaps you should try some spelling variations:
tham luu » tam luu, thanh luu, cham cuu
ban hanh » ban hang
va triet » va thiet, ve triet, cua triet
va trien » va truyen, va thiet, va tuyen
su triet » su viet, su tien, ve triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
luu ban » luu bang, luu van, luu dan

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 lang xa hoi. hieu va tham luu ban hanh vi ((((va triet) OR (va trien))) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky lang xa hoi. hieu va tham luu ban hanh vi ((((va triet) OR (va trien))) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky lang xa hoi. hieu va tham luu ban hanh vi ((((va triet) OR (va trien))) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu cac ky lang xa hoi. hieu va tham luu ban hanh vi ((((va triet) OR (va trien))) or (su triet))*.