Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"xuan thu tao snippets" » "xuan thuy tao snippets", "tuan thu tao snippets", "luan thuc tao snippets", "xuan thu thao snippets", "xuan thu bao snippets", "xuan thu tai snippets", "xuan thu tao slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("xuan thu tao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan thu tao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan thu tao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan thu tao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.