Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
dang xay » dang van, van xay
va thanh » gia thanh, ban thanh, va tinh
hieu van » thien van, lieu va, hieu ve
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
cac tap » cac cap, cac tac, cac tai
vi cua » vai cua, di cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
cua cu » cua chu, cua cau, cua su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang xa) OR (dang xay)) hoi. ((hieu van) OR (hieu va)) cac tap va thanh vi cua cu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang xa) or (dang xay)) hoi. ((hieu van) OR (hieu va)) cac tap va thanh vi cua cu~".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang xa) or (dang xay)) hoi. ((hieu van) OR (hieu va)) cac tap va thanh vi cua cu*.