Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
hanh hang » thanh hang, hang hang, hanh han
cong bang » cuong bang, dong bang, hong bang
bang php » nang phap, bang thep, mang phap
php danh » pho danh, khop danh, hop danh
danh bat » doanh bat, anh bai, dinh ba
va cong » tai cong, cua cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) OR (chieu sach)) - hanh hang va cong bang php danh bat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) OR (chieu sach)) - hanh hang va cong bang php danh bat".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) OR (chieu sach)) - hanh hang va cong bang php danh bat*.