Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban
sinh va » sinh vat, tinh va, dinh van

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 - thanh ((sinh cua) OR (sinh va)) nhung ((cong dan) or (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh ((sinh cua) OR (sinh va)) nhung ((cong dan) OR (cong tan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh ((sinh cua) OR (sinh va)) nhung ((cong dan) or (cong tan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((sinh cua) OR (sinh va)) nhung ((cong dan) or (cong tan)) toan tap*.