Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hoai do snippets" » "pham hoa do snippets", "pham hoang do snippets", "pham khoa do snippets", "pham hoai duc snippets", "pham hoat doi snippets", "pham hoach do 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 hoai do 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 hoai do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hoai do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hoai do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.