Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu xanh, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trong dong » trong cong, trong nong, trong dang
hieu lang » hieu quang, nhieu tang, hieu van
dong bang » dong san
bang than » bang thanh, ban than, sang than
tuong va » truong va, thuong va, luong va
va trong » va truong, va thong, va tuong
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (((chieu sach) OR (chieu sang)))) - thanh tuong va trong dong bang than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (((chieu sach) OR (chieu sang)))) - thanh tuong va trong dong bang than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (((chieu sach) OR (chieu sang)))) - thanh tuong va trong dong bang than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (((chieu sach) OR (chieu sang)))) - thanh tuong va trong dong bang than cau*.