Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doan de cua snippets" » "doan de code snippets", "dan de cua snippets", "doan do cua snippets", "toan de cua snippets", "doan le cua snippets", "doan te cua snippets", "doan dieu cua snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("doan de cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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