Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ghep hoi cho snippets" » "ghep hoi code snippets", "ghep noi cho snippets", "nghiep hoi cho snippets", "ghep tuoi cho snippets", "ghep hoi chu snippets", "ghep hoi co snippets", "ghep hoc cho 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: (((("ghep hoi cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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