Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
canh doanh » chinh doanh, doanh doanh, kinh doanh
luan hang » luan nang, luan han, luan tang
luan hung » luan chung, lan hung, luan ung
chi xanh » chi anh, chi danh, chi hanh
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
doi chi » doi khi

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 - ((canh doanh) or (hanh doanh)) ((luan hang) OR (luan hung)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((canh doanh) OR (hanh doanh)) ((luan hang) OR (luan hung)) cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - ((canh doanh) or (hanh doanh)) ((luan hang) OR (luan hung)) cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - ((canh doanh) or (hanh doanh)) ((luan hang) OR (luan hung)) cong dan than cau*.