Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"yan nu doc snippets" » "van nu doc snippets", "yan xu doc snippets", "yan n1 doc snippets", "yan n2 doc snippets", "yan 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: (((("yan 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: (((("yan nu doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( yan nu doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("yan nu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.