Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
dang xay » van xay
thanh vi » hanh vi, thanh va, thanh ve
dang van » hoang van, hang va
hanh va » hang va, hanh vi
xuc gia » duc gia, luc gia, tuc gia
sach ty » sach y, sach tu, sach thu
te sach » toc sach
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((dang xay) OR (dang van)) hoi. hieu ve cam xuc gia ((thanh vi) or (hanh va)) cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((dang xay) OR (dang van)) hoi. hieu ve cam xuc gia ((thanh vi) OR (hanh va)) cau theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((dang xay) OR (dang van)) hoi. hieu ve cam xuc gia ((thanh vi) or (hanh va)) cau theo".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((dang xay) OR (dang van)) hoi. hieu ve cam xuc gia ((thanh vi) or (hanh va)) cau theo*.