Perhaps you should try some spelling variations:
"hoc dan toan snippets" » "hoc dan code snippets", "hoc van toan snippets", "hoc dan than snippets", "hoc manh toan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoc dan toan snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc dan toan snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
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