Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tham du cau snippets" » "tham du code snippets", "thap du cau snippets", "tham do cau snippets", "pham duc cau snippets", "tham cu cau snippets", "tham da cau snippets", "tham di cau 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 ("tham du cau snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tham du cau snippets"))) OR ("locating bug core snippets")).
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