Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung pham va slippers" » "hung pham va slippers", "nhung pham va slippers", "trung phan va slippers", "tung pham van slippers", "tung pham ma slippers", "tung pham tai slippers", "tung pham va slippery", "tung pham va grippers"
"locating bug code snippets" » "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: (((("tung pham va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tung pham va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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