Thank you to everyone who answered this question. Perhaps I did not explain the problem very well. I have been using the LAC census records for a long time and am fully aware of how to use the new search engine. That is what appears to be the problem for the past few days and is still an issue this morning.
What I am saying is even if I know exactly how to spell the person's name, know their correct age and birth year and allow for a small range of ages and years, the LAC search engine will not find the record. I know the data is correct as I use FamilySearch or Ancestry to look at the actual image.
I have tried this across numerous records from 1871 - 1911 recently.
I eventually can find the record by using a "cheat method".
I have a large collection of LAC census records for my relatives and I just find one in the same District, then vary the image number until I get the record I want. To reiterate, I believe there is currently something wrong with the LAC census search engine.
Thanks, Jim