Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong quang » luong quang, thong quang, duong quang
quang phan » quang chan, quang phat, quang thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
bang cong » dang cong, bang song, hang cong
trinh va » trinh van, trinh ve, trinh vi
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trinh va) or (trinh vat)) bang cong quang phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trinh va) OR (trinh vat)) bang cong quang phan tap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trinh va) or (trinh vat)) bang cong quang phan tap*.