Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cong than » cong thanh, cong thang, cong thai
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chiet tach)) - canh tranh van nhung ((cong than) OR (cong tan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chiet tach)) - canh tranh van nhung ((cong than) OR (cong tan)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chiet tach)) - canh tranh van nhung ((cong than) OR (cong tan)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chiet tach)) - canh tranh van nhung ((cong than) OR (cong tan)) phan cau*.