Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu nhat anh slippers" » "thu nhap anh slippers", "thu thuat anh slippers", "thu ha anh slippers", "thu nhat hanh slippers", "thu nhat minh slippers", "thu nhat ban slippers", "thu nhat anh slippery", "thu nhat anh 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: (((("thu nhat anh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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