Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tap van tran snippets" » "tap van trang snippets", "tap van tranh snippets", "tap van tuan snippets", "tap va tran snippets", "tap vat tran snippets", "tap quan tran snippets"

Try widening your search to All Fields.

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