Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 - canh ((tranh va) OR (trinh va)) nhung ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh ((tranh va) OR (trinh va)) nhung ((cong dan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - canh ((tranh va) OR (trinh va)) nhung ((cong dan) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh ((tranh va) OR (trinh va)) nhung ((cong dan) or (cong san)) toan cao*.