Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham voi lo snippets" » "pham vi lo snippets", "cham voi lo snippets", "pham doi lo snippets", "pham voi loi snippets", "pham voi ho snippets", "pham noi lo 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: (((("pham voi lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham voi lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham voi lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham voi lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.