Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
khong cong » thong cong, khong cang, chong cong
hien xanh » hien hanh, hien nhanh, chieu xanh
trang cua » tranh cua, tang cua, trung cua
cua khong » hua khong, cua phuong, cua thuong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (chieu sach)) - hanh trang cua khong cong ((dan than) OR (dan chan)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu sach)) - hanh trang cua khong cong ((dan than) OR (dan chan)) man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu sach)) - hanh trang cua khong cong ((dan than) OR (dan chan)) man".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu sach)) - hanh trang cua khong cong ((dan than) OR (dan chan)) man*.