Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thu dac sach snippets" » "thu dac sac snippets", "thu doc sach snippets", "thu dat sach snippets", "thu duc sach snippets", "thu xac sach snippets", "thu da sach snippets", "thu dac sach slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("thu dac sach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu dac sach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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