Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc han ho snippets" » "luc nhan ho snippets", "luc ha ho snippets", "duc han ho snippets", "luc han cho snippets", "luc can ho snippets", "luc hen ho 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: (((("luc han ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc han ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc han ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc han ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.