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 le » cach le, cac he, mac le
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 le 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 le 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 le van thanh than ((cua te) or (cua tu))*.