Perhaps you should try some spelling variations:
"cach noi code snippets" » "cach thoi code snippets", "hanh noi code snippets", "anh noi code snippets", "cach noi cong snippets", "cach noi co snippets", "cach noi de snippets", "cach noi code slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("cach noi code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cach noi code snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach noi code snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach noi code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.