Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuan thu da snippets" » "toan thuc da snippets", "van thu da snippets", "tuan thu dac snippets", "tuan thu dai snippets", "tuan thu dau 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: (((("tuan thu 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: (((("tuan thu da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuan thu da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuan thu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.