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