Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong cac tao slippers" » "duong cac tao slippers", "dong bac tao slippers", "dung cac tao slippers", "dong cau tao slippers", "dong cac tro slippers", "dong cac tac slippers", "dong cac tao slippery", "dong cac tao 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: (((("dong cac tao slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cac tao slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dong cac tao slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.