Perhaps you should try some spelling variations:
thuong thpt » truong thpt, thuong thiet, thuong thuat
van thuong » va thuong, van chuong, van phuong
doi chieu » doc hieu, doi chi, mot chieu
nhan dan » phan dau, gian dan, nhan tai
thpt dan » thuc dan, tho dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sach - nhan dan van thuong thpt dan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - nhan dan van thuong thpt dan khan cap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - nhan dan van thuong thpt dan khan cap*.