Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham ky do snippets" » "pham duy do snippets", "pham xay do snippets", "pham ky doi snippets", "pham ke do snippets", "pham ly 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: (((("pham ky 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: (((("pham ky do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham ky do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham ky do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.