Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 dung cong ((dan toan) or (van tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh trinh cua dung cong ((dan toan) OR (van tuan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh trinh cua dung cong ((dan toan) or (van tuan)) cao*.