Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong lang, cong nong
chieu sach » chinh sach, chiet tach, chieu sang
cong quang » luong quang, thong quang, duong quang
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh hinh » hanh chinh, hanh tinh, hanh dinh
hinh cua » chinh cua, sinh cua, tinh cua
chuan he » quan he

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 hinh cua cong ((cong ngang) or (cong quang)) chuan he~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh hinh cua cong ((cong ngang) OR (cong quang)) chuan he*.