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