Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luan hoc do snippets" » "luan hoc code snippets", "luan hoan do snippets", "quang hoc do snippets", "luan khoa do snippets", "luan hoc doi snippets", "luan hoc co snippets", "luan hoc bo 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: (((("luan hoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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