Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoang cong » hang cong, hoang long, hoang vuong
hanh tran » hanh trang, thanh tran, hanh tram
van hoang » van hoan, quan hoang, tran hoang
tran van » luan van
van toan » van tuan, van tan, van thanh

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

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