Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"peng su do snippets" » "leng su do snippets", "peng shi do snippets", "phong su do snippets", "peng su dao snippets", "peng su doi snippets", "peng so do 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: (((("peng su do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("peng su do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( peng su do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("peng su do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.