Perhaps you should try some spelling variations:
quan trong » gian trong
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tang » hanh trang, anh tang, hanh mang
tang quan » tang luan, nang quan, tong quan
chu xanh » chu manh, chua xang, chuc danh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho ((chu xanh) OR (chieu xanh)) - hanh tang quan trong cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((chu xanh) OR (chieu xanh)) - hanh tang quan trong cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: cho ((chu xanh) OR (chieu xanh)) - hanh tang quan trong cong dan toan cau*.