Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc hai toan snippets" » "duc hai code snippets", "duc bai toan snippets", "duc hai tan snippets", "duc hach toan snippets", "cuc hai toan snippets", "duc dai toan snippets", "duc hau toan 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: (((("python using java snippets") or ("duc hai toan snippets"))) or ("locating bug core snippets"))~.
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