Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan dua doi snippets" » "phan duc doi snippets", "phan duy doi snippets", "phan quan doi snippets", "phan sua doi snippets", "phan lua doi snippets", "phan dua moi 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 dua doi 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 dua doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dua doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dua doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.