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