'n ganz normaler Tag
'ne Suche gibt es nicht
Could anyone tell me what these abbreviations 'n and 'ne mean?
Both are abbrevations of forms of ein/eine
Note that both abbreviations are very colloquial and only used in everyday speech in some parts of Germany.
It is not an abbreviation, this is slang or dialect, used in northern parts of German spoken area (you rarely will hear it in Austria).
"N" stands for "ein", "ne" stands for "eine":
In southern regions (Bavaria, Austria) people use an other slang word for those articles. It is "a" for both, "ein" and "eine":