[R] I don't find "fuzzy matching"

[dg gdf]

hello.
I'm a student that work on R.(version 1.7.0)
I need to some data frames such as
"possum","Beams"'"kiwishade","dolphins",... .
I typed help.search("possum") and so on,but the
response was "No help files found with alias or title
matching 'possum' using fuzzy matching.".
I dont know what is "fuzzy matching" and I didn't find
it in google search.
please help me to find these data frames very very
directly.