Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dan nhung » ban nhung, dap nhung, san nhung
cuong tap » luong tap, cong tac, luong tai
ho chieu » theo chieu, hoc thieu, doi chieu
tung dan » dung dan, huong dan, trung dai
cong tap » cong tac, cong tan, tong tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh tung dan nhung ((cong tap) or (cuong tap)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung dan nhung ((cong tap) OR (cuong tap)) van ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung dan nhung ((cong tap) or (cuong tap)) van ban*.