Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan toan ve snippets" » "xuan toan va snippets", "xuan toan ke snippets", "xuan toan von snippets", "quan toan ve snippets", "luan toan ve snippets", "xuat toan ve 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: (((("xuan toan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan toan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan toan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan toan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.