Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"pha duc tren snippets" » "pha duoc tren snippets", "pha dua tren snippets", "pha duc tien snippets", "pham duc tren snippets", "phan duc tren snippets", "pha du tren 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 ("pha duc tren snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("pha duc tren snippets"))) OR ("locating bug core snippets")).
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