Perhaps you should try some spelling variations:
dang xay » dang van
hieu cao » chieu cao, hieu cac, hieu ca
luong va » dung va
tu sach » thu sach, su sach, te sach
long va » long van, blong va, dong va
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
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 sach y ((dang xay) or (van xay)) hoi. hieu cao chat ((long va) OR (luong va)) danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((dang xay) OR (van xay)) hoi. hieu cao chat ((long va) OR (luong va)) danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((dang xay) or (van xay)) hoi. hieu cao chat ((long va) OR (luong va)) danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((dang xay) or (van xay)) hoi. hieu cao chat ((long va) OR (luong va)) danh vi cua tre*.