Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung nhat vo snippets" » "dung nhat code snippets", "dung nhan vo snippets", "dang nhat vo snippets", "dung nha vo snippets", "dung nhat ve snippets", "dung nhat so snippets", "dung nhat vu snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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