Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan doc don snippets" » "phan duoc don snippets", "phan duc don snippets", "than doc don snippets", "phan duoc dong snippets", "phan duc dong snippets", "phan duoc dan 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 doc don 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 doc don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan doc don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan doc don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.