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