Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tra cau cach snippets" » "tra cau code snippets", "tra cai cach snippets", "tra cac cach snippets", "tra ca cach snippets", "tra sau cach snippets", "ta cau cach snippets", "tra cuu cach 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: (((("tra cau cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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