Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
sai ky » sac ky
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 ((sai ky) or (cac ky)) lang xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sai ky) OR (cac ky)) lang xa hoi. ((hieu ve) OR (hieu va)) cam duc va hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (cac ky)) lang xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh vi cua viet*.