Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phan che san snippets" » "han che san snippets", "phap che san snippets", "phan thi san snippets", "phan cho san snippets", "phan nghe san snippets", "phan che quan snippets"

Try widening your search to All Fields.

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