Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
dung cua » dung luan, dung cho
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
chat cao » chat co, chat cho, chat cam
chat bao » chat ban, thuat bao, nhat ban

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

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