Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
phuc khong » thuc khong, thuoc khong, chu khong
hanh tang » hanh trang, anh tang, hanh mang
cua khong » hua khong, cua phuong, cua thuong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) OR (chieu sach)) - hanh tang ((cua khong) or (phuc khong)) cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - hanh tang ((cua khong) OR (phuc khong)) cong tan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sach)) - hanh tang ((cua khong) or (phuc khong)) cong tan toan cau*".