Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhiet nang » nhiet dong, viet nang, nhieu tang
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong van » cong vang, song van, cong tan
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (nhiet nang)) - hanh trinh cua nhung ((cong van) OR (cong san)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (nhiet nang)) - hanh trinh cua nhung ((cong van) OR (cong san)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (nhiet nang)) - hanh trinh cua nhung ((cong van) OR (cong san)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (nhiet nang)) - hanh trinh cua nhung ((cong van) OR (cong san)) van ban*.