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