Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phat hai so snippets" » "phat ha so snippets", "pham hai so snippets", "phan hai so snippets", "phat dai so snippets", "phat tai so snippets", "phat thai son 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: (((("phat hai 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: (((("phat hai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phat hai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phat hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.