Perhaps you should try some spelling variations:
khang khuan » khang chan, khanh thuan, zhang chuan
thpt khang » thpt thang, thpt hung, thpt quang
doi chieu » doc hieu, doi chi, mot chieu
dung cong » dung trong
cong thpt » cong thuc, cong thai, cong nhat
khuan cap » khan cap, khoan cam, thuan cam
phan dat » phan dau, phan dai, phan day
dat dung » dan dung, vat dung, da dung

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 - phan dat dung cong thpt khang khuan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - phan dat dung cong thpt khang khuan cap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - phan dat dung cong thpt khang khuan cap*.