Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan ham don snippets" » "phan ha don snippets", "phan cam don snippets", "phan hai don snippets", "phan ham dan snippets", "phan pham dong snippets", "phan lam dong 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: (((("phan ham don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan ham don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan ham don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan ham don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.