Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thoai van do snippets" » "thai van do snippets", "thi van do snippets", "hoa van do snippets", "thoai van dao snippets", "thoai van de snippets", "thoai van du 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: (((("thoai van 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: (((("thoai van do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thoai van do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thoai van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.