Perhaps you should try some spelling variations:
hanh sinh » hanh tinh, hanh dinh, hinh sinh
chi xanh » chi anh, chi danh, chi hanh
sinh cua » manh cua, dinh cuu, sinh va
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
doi chi » doi khi

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

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