Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh qua » doanh quan, doanh cua, danh qua
qua duong » quan duong, qua dung, qua dong
chi xanh » chi anh, chi danh, chi hanh
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
thai cao » thoai cac, thuat cao, toan cao
doi chi » doi khi
tai cao » tao cao, tai sao, tai cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - hanh doanh qua duong ((cong dan) or (cong san)) ((thai cao) OR (tai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - hanh doanh qua duong ((cong dan) OR (cong san)) ((thai cao) OR (tai cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - hanh doanh qua duong ((cong dan) or (cong san)) ((thai cao) OR (tai cao))".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - hanh doanh qua duong ((cong dan) or (cong san)) ((thai cao) OR (tai cao))*.