Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han he cao snippets" » "han che cao snippets", "hanh he cao snippets", "dan he cao snippets", "han he co snippets", "han te cao snippets", "han he cac 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: (((("han he cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han he cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han he cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han he cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.