Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de 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 y ((lang xa) or (van xay)) hoi. hieu va cam ((xuc va) or (tuc va)) thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (van xay)) hoi. hieu va cam ((xuc va) OR (tuc va)) thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (van xay)) hoi. hieu va cam ((xuc va) or (tuc va)) thanh di cua tre*.