Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi pham chi snippets" » "phi phan chi snippets", "phoi phan chi snippets", "vi pham chi snippets", "phi pham thi snippets", "phi tham chi snippets", "phi pham chieu 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 chi 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 chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi pham chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi pham chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.