Trim will not fix space-related spelling errors. It will only look for instances of two spaces next to each other, or leading or trailing whitespace on strings of characters.
In smaller datasets, simple sorts will quickly show data entry errors in data points consisting of only a few words. Simple sorts will also bring fields beginning with unusual characters to the top.
While a sort rearranges all the data in your spreadsheet based on the order imposed from your chosen column, a filter uses the criteria you provide to filter out all rows from the spreadsheet that don't meet the criteria. The rows remain hidden, and will re-appear once the filter is removed. Filters can be applied temporarily on one or various columns in order to hone in on specific slices of your data. If you create a slice using filters that you'd like to examine separately from the rest of the data, you can copy the filtered slice to another worksheet or to a new spreadsheet.
Simple filters are helpful for finding and fixing data entry errors and typos, making quick changes to subsets of your data, and spot-checking data.