Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
vu khac » vu kham, vu khanh, bui khac
khac ty » khac thi
tinh va » tich va, trinh van, trinh vat
xuc may » xuc hay, truc may, phuc may
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu van
so viet » hoc viet
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac ty hang va hoi. ((hieu ve) or (hieu va)) cam xuc may tinh va ((cua viet) or (so viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac ty hang va hoi. ((hieu ve) OR (hieu va)) cam xuc may tinh va ((cua viet) OR (so viet)).
• Adding a wildcard symbol may retrieve word variants: vu khac ty hang va hoi. ((hieu ve) or (hieu va)) cam xuc may tinh va ((cua viet) or (so viet))*.