Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han che hoa snippets" » "han che khoa snippets", "han che hoat snippets", "han che ho snippets", "phan che hoa snippets", "nhan che hoa snippets", "hanh che hoa 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 che hoa 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 che hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han che hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han che hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.