Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nen tang ca snippets" » "nen tang code snippets", "le tang ca snippets", "nen mong ca snippets", "nen van ca snippets", "nen tang cua snippets", "nen hang ca snippets", "nen tang ma 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: (((("python using java snippets") or ("nen tang ca snippets"))) or ("locating bug core snippets"))~.
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