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