Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
luan luong » luan phuong, tuan duong, van luong
doi chieu » doc hieu, doi chi, ho chieu
hanh dong » anh dong, ha dong
luon ung » luan ung, luoc ung, luon suong
sang tai » hang tai, tang tai, sang than
sang tao » hang tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh dong ((luon ung) OR (luan luong)) cong ((sang tai) OR (sang tao)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh dong ((luon ung) or (luan luong)) cong ((sang tai) OR (sang tao)) cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh dong ((luon ung) or (luan luong)) cong ((sang tai) OR (sang tao)) cau*.