Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh dong » anh dong, ha dong
cua nhung » va nhung
cong luan » tong luan, cong tuan, dong luan
dong cua » dung cua, cong cua, huong cua

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))) or (lieu tinh)) - hanh dong cua nhung cong luan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu xanh) OR (chieu sach))) OR (lieu tinh)) - hanh dong cua nhung cong luan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((chieu xanh) OR (chieu sach))) or (lieu tinh)) - hanh dong cua nhung cong luan van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu xanh) OR (chieu sach))) or (lieu tinh)) - hanh dong cua nhung cong luan van ban*.