Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
thanh ve » hanh ve, thanh vien, thanh van
hieu van » hieu va, thien van, lieu va
te sach » toc sach
truc va » thuc va, thuc vat, trung va
van cau » van dau, van hau, van chat
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, dang xay
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay

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 ((xang xa) OR (ang xa)) hoi. hieu van cau truc va ((thanh ve) or (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((xang xa) OR (ang xa)) hoi. hieu van cau truc va ((thanh ve) OR (thanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((xang xa) OR (ang xa)) hoi. hieu van cau truc va ((thanh ve) or (thanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((xang xa) OR (ang xa)) hoi. hieu van cau truc va ((thanh ve) or (thanh va)) cua tre*.