Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"post hoc chi snippets" » "post hoc chia snippets", "post hoc cho snippets", "post hoc chu snippets", "most hoc chi snippets", "cost hoc chi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("post hoc chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("post hoc chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( post hoc chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("post hoc chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.