Perhaps you should try some spelling variations:
dang xay » dang van, van xay
hieu cao » chieu cao, hieu cac, hieu ca
chat luc » chat xuc, chat lua, nhan luc
te sach » toc sach
sach vu » sach va, sach tu, sach uu
dang xa » lang xa, dang ha, dang va
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
va dao » ca dao
dao vi » dao voi, dao ve, dao va
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: te sach vu ((dang xa) OR (dang xay)) hoi. hieu cao chat luc va dao vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu ((dang xa) OR (dang xay)) hoi. hieu cao chat luc va dao vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach vu ((dang xa) OR (dang xay)) hoi. hieu cao chat luc va dao vi cua tre*.