Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
hoa khong » khoi khong, hoa cong, he khong
trinh hoa » trinh do, trinh han
chi sang » chi lang, chieu sang, chi chang
cua tong » cua cong, cua dong, cua nong
doi chi » doi khi
hoa tap » khoa tap, hoc tap, hoa tan

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 sang - canh doanh ((cua tong) OR (hoa khong)) cong trinh hoa tap~.
• Adding a wildcard symbol may retrieve word variants: doi chi sang - canh doanh ((cua tong) or (hoa khong)) cong trinh hoa tap*.