Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"de tranh doc snippets" » "de tranh code snippets", "de tranh duoc snippets", "de trinh doc snippets", "de tranh cuoc snippets", "de thanh doc snippets", "dau tranh doc snippets", "nen tranh doc 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: (((("de tranh doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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