Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
mang xa » lang xa, mang may, dang xay
tuc va » truc va, tuc xa, duc va
di cua » dai cua, doi cua, de cua
va cam » va cham, va cac, va cao

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 ty ((mang xa) or (nang x)) hoi. hieu va cam ((tuc va) OR (thuc va)) thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((mang xa) OR (nang x)) hoi. hieu va cam ((tuc va) OR (thuc va)) thanh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((mang xa) or (nang x)) hoi. hieu va cam ((tuc va) OR (thuc va)) thanh di cua tre*".