Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
do ban » doi ban, do ben, lo ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (chieu sach)) - hanh tang luan dong cong trinh ((do ban) OR (co ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - hanh tang luan dong cong trinh ((do ban) OR (co ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sach)) - hanh tang luan dong cong trinh ((do ban) OR (co ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sach)) - hanh tang luan dong cong trinh ((do ban) OR (co ban))*.