Text Filter-Begin with... (multiple begin withs?)

could you elaborate? but say you want to filter on begins with 123 and 345 and 456 and show all those at once then use advanced filter
in a spare column put exactly the same as the header cell of the column you are wanting to filter
so say you have a column and a1 is "sales"
in say h1 put "sales" then in h2 put 123* in h3 345* in h4 456*
now select the data you want to filter in this case A1 down to end
then data/advanced filter
action-filter the list in place
list range say- $A$1:$A$100
criteria range-$H1:$H$3
click ok
only rows starting 123 , 345 and 456 will pass through the filter
for more explanation see here
http://www.contextures.com/xladvfilter01.html
alternatively if you want to filter on say 123 xxx and 345 yyy and 456 mmm
but not 1234 aaaa or 3456 jjjjj or 4561 jjjjjj
in a spare col again say h
leave h1 blank (.this is important)
then in h2 put =LEFT(A2,4)="123 " and in h3 put =LEFT(A2,4)="345 " and in h4
=LEFT(A2,4)="456 " (note the space at the end") and again apply the filter using h1:h4 as criteria
this will pas 3 digits ending in space and not 4 digits