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