Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
van thanh » ban thanh, van tuan
tu sach » thu sach, su sach, te sach
van hoc » van hoa
y dang » ky dang, 2 dang, b dang
_ dang » _ dan, 2 dang, _ danh
cac lo » cac lop, cac co, cac bo
lo van » le van, vo van, so van
cua tu » cua tuc, cua su, cua cu

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 ((y dang) or (_ dang)) van hoc. lieu va cac lo van thanh than ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y dang) OR (_ dang)) van hoc. lieu va cac lo van thanh than ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y dang) or (_ dang)) van hoc. lieu va cac lo van thanh than ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y dang) or (_ dang)) van hoc. lieu va cac lo van thanh than ((cua te) OR (cua tu))*.