Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan n2 doc snippets" » "quan 12 doc snippets", "quan nha doc snippets", "quan nam doc snippets", "quan n1 doc snippets", "quan 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: (((("quan n2 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: (((("quan n2 doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan n2 doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan n2 doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.