It's not clear what you mean by "date entries". Word's search does not have
anything that is date-specific. However, through the careful use of various
options and possibly wildcards, it's possible to design a search for just
about anything.
For example, if you're looking for dates formatted as m/d/yyyy (e.g.,
4/6/2010), searching for:
Find what:[0-9]{1,2}/[0-9]{1,2}/[0-9]{4}
with Use wildcards enabled, should find any date matching that pattern. (It
will match dates with 2-digit months twice, in fact--once for the full date
and again for the date beginning with the 2nd month digit.)
