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