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