Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
cua thong » cua thuong, cua khong, suat thong
ho chieu » theo chieu, hoc thieu, doi chieu
cua tong » cua cong, cua dong, cua nong
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh tung ((cua thong) OR (cua tong)) huong dan ((chan cau) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh tung ((cua thong) OR (cua tong)) huong dan ((chan cau) or (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh tung ((cua thong) OR (cua tong)) huong dan ((chan cau) or (phan cau))*.