You should visit some stores which carry a remote and check the manual if your DVD appeares listed. If you can't have a look at the manual - frequently these remotes come in a sealed blister - take note of make and model and then do a google search for the maunal
Some examples of manuals on line are

http://www.nwtel.ca/sites/default/files/media/documents/tv/DRC800-User-Guide-US-EN.pdf

http://www.urcsupport.com/images/uploaded_images/Atlas_OCAP_M1056.pdf

https://customer.xfinity.com/~/media/support_comcast_com/residential/remotes/manuals/silver_with_gray_ok_button.pdf


https://www.foxtel.com.au/content/dam/foxtel/support/pdf/remote-guide-iqhd-TDC850NF.pdf

I looked up this last one and it has all these codes for Bush,
0741 0723 1723 0758 0859 0727 0718 0745 0806 0544 0802 0846 0907 0912 0751 0546 1193 1464 1447 1511 1168 1860 1395

If you are interested in a Foxtel Remote, look for it on google. A site selling it is

http://www.dicksmith.com.au/tv-video/replacement-remote-foxtel-iq-2-dsau-gh3047