Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tang » hanh trang, anh tang, hanh mang
bang cong » dang cong, bang song, hang cong
van tuyen » va tuyen, van chuyen, van nguyen
tang cua » mang cua, hang cua, tang luan
ban cong » van cong, phan cong, ban huong

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