Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan lan ca snippets" » "phan lan code snippets", "phan lap ca snippets", "phan van ca snippets", "phan loai ca snippets", "phan dan ca snippets", "phan tan ca snippets", "phan lan ha 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: (((("phan lan ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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