Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
duong manh » duong van
doi chieu » doc hieu, doi chi, ho chieu
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
toan cau » toan ban, toan tap, toan tai
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 - hanh tranh ((cua thong) OR (cua khong)) duong manh ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh tranh ((cua thong) OR (cua khong)) duong manh ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh tranh ((cua thong) OR (cua khong)) duong manh ((toan cau) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh tranh ((cua thong) OR (cua khong)) duong manh ((toan cau) or (toan cao))*.