Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khieu noi da snippets" » "khieu nai da snippets", "thieu nhi da snippets", "hieu moi da snippets", "khieu nuoi da snippets", "khieu noi va snippets", "khieu toi da 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: (((("khieu noi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khieu noi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khieu noi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khieu noi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.