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