Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chang nu doc snippets" » "chang xu doc snippets", "chang xue doc snippets", "chang ha doc snippets", "chang n1 doc snippets", "chang n2 doc snippets", "chang n3 doc 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: (((("chang nu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chang nu doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chang nu doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chang nu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.