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