Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
thu hanh » thuc hanh, thu thanh, thuy hanh
doanh va » doan va, doanh tai, doanh cua
ta thanh » tai thanh, va thanh, tran thanh
ha thanh » va thanh, pham thanh, phan thanh
binh ly » sinh ly, benh ly, dinh ly
va khi » va chi, va kha, va ki

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hanh doanh va khi đong luc ) or ( ((ta thanh) OR (ha thanh)) binh ly chi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hanh doanh va khi đong luc ) OR ( ((ta thanh) OR (ha thanh)) binh ly chi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thu hanh doanh va khi đong luc ) or ( ((ta thanh) OR (ha thanh)) binh ly chi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( thu hanh doanh va khi đong luc ) or ( ((ta thanh) OR (ha thanh)) binh ly chi đong luc ))*.