Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
cong dan » cong san, cong tan, huong dan
dan tran » dang tran, tan tran, dan than
tran van » luan van

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)) - canh tranh cua trong cong dan tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu sach)) - canh tranh cua trong cong dan tran van.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu sach)) - canh tranh cua trong cong dan tran van*.