Perhaps you should try some spelling variations:
dang xay » dang van, van xay
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va
loc va » hoc va
di cua » dai cua, doi cua, de cua
va cau » van cau, va cac, va dau

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 ((nang xa) or (dang xay)) hoi. hieu va cau ((luc va) or (loc va)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (dang xay)) hoi. hieu va cau ((luc va) OR (loc va)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (dang xay)) hoi. hieu va cau ((luc va) or (loc va)) hanh di cua tre*.