Perhaps you should try some spelling variations:
hieu cao » chieu cao, hieu cac, hieu ca
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
sach vu » sach va, sach tu, sach uu
vu dang » su dang, vu quang, cua dang
dang xa » dang xay, lang xa, dang ha
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi 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 hoi. hieu cao chat ((luc va) OR (tuc va)) dao ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu dang xa hoi. hieu cao chat ((luc va) OR (tuc va)) dao ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu dang xa hoi. hieu cao chat ((luc va) OR (tuc va)) dao ((vi cua) or (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach vu dang xa hoi. hieu cao chat ((luc va) OR (tuc va)) dao ((vi cua) or (vai cua)) tre*.