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