Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chuong dan » huong dan, chuong dong, phuong danh
chuong han » thuong han, chung han, phuong hanh
trinh cua » tinh cua, trinh quan, trinh luan
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu xanh - hanh ((trinh cua) or (trinh luat)) trong ((chuong dan) OR (chuong han)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh cua) OR (trinh luat)) trong ((chuong dan) OR (chuong han)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh cua) or (trinh luat)) trong ((chuong dan) OR (chuong han)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh cua) or (trinh luat)) trong ((chuong dan) OR (chuong han)) toan cau*.