Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ve » hanh ve, thanh va, thanh vien
chang xu » chang xue, chao xu, thong xu
te sach » toc sach
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
hieu ve » hieu van
cuu tre » cua tre, cau tren, cau treo
bac so » bac son, bac si, bac bo
so van » su van, vo van
hang x » nang x, hoang xa, hang nxb
ve cuu » ve cau, ve chu, ve 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 ty ((hang x) OR (chang xu)) hoi. ((hieu ve) or (hieu va)) bac so van thanh ve cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((hang x) OR (chang xu)) hoi. ((hieu ve) OR (hieu va)) bac so van thanh ve cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((hang x) OR (chang xu)) hoi. ((hieu ve) or (hieu va)) bac so van thanh ve cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((hang x) OR (chang xu)) hoi. ((hieu ve) or (hieu va)) bac so van thanh ve cuu tre*.