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