Perhaps you should try some spelling variations:
"nam tai code snippets" » "nam tai cong snippets", "nam tai co snippets", "nam tai hoe snippets", "lam tai code snippets", "pham tai code snippets", "nam tai 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.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("nam tai 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: (((("nam tai code snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam tai code snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam tai code snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.