Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan ve dk snippets" » "phan le dk snippets", "phan va dk snippets", "pha ve dk snippets", "phan ve du snippets", "phan ve 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: (((("phan ve dk snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan ve dk snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan ve dk snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan ve dk snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.