Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan con so snippets" » "phan cong so snippets", "phan bon so snippets", "phan co so snippets", "phan hon so snippets", "phan con bo 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 con so 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 con so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan con so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan con so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.