Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung du sach slippers" » "dung de sach slippers", "dung cu sach slippers", "dung cua sach slippers", "dung su sach slippers", "dung vu sach slippers", "dung do sach slippers", "dung du sach slippery", "dung du sach 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: (((("dung du sach slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung du sach slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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