Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan tan doi snippets" » "phan van doi snippets", "phan tap doi snippets", "phan lan doi snippets", "phan tan hoi snippets", "phan tan soi snippets", "phan tan voi 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 tan 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 tan doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan tan doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan tan doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.