Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach thu » sach thue, sach thieu, sach tham
thu lang » thu hang, thu bang, phu lang
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
cac luc » cau luc, coc luc, cac nuoc
cua te » cua tu

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 thu lang xa hoi. ((hieu ve) OR (hieu va)) cac luc ((van ban) or (van thanh)) dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu lang xa hoi. ((hieu ve) OR (hieu va)) cac luc ((van ban) OR (van thanh)) dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu lang xa hoi. ((hieu ve) OR (hieu va)) cac luc ((van ban) or (van thanh)) dai cua te*".