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