Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"tu hoc tren snippets" » "tu moc tren snippets", "tu hoc truyen snippets", "tu thuoc tren snippets", "te hoc tren snippets", "tu hoc tren slippers"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu hoc tren snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
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