Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
hanh trinh » canh tranh, hanh chinh
thuy hanh » thuc hanh, thuy anh, thuy canh
doanh cua » doanh luan
cua khoi » cua hoi, cua kho, cua khoa
trinh ly » trinh ky, trinh do, trinh tu
ta hanh » ta thanh, va hanh, tu hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuy hanh doanh cua khoi đong luc ) or ( ta hanh trinh ly chi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuy hanh doanh cua khoi đong luc ) OR ( ta hanh trinh ly chi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( thuy hanh doanh cua khoi đong luc ) or ( ta hanh trinh ly chi đong luc ))*.