Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong bao cac snippets" » "dong bao code snippets", "dong bac cac snippets", "dong dao cac snippets", "dong ban cac snippets", "dong bao cao snippets", "dong sao cac snippets", "dong tao cac 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: (((("dong bao cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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