Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"hoa phan h snippets" » "hoa dan h snippets", "co phan h snippets", "hoa phan _ snippets", "hoa phan thi snippets", "hoa phan huy snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoa phan h snippets") or ("python missing data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoa phan h snippets") OR ("python missing data snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("hoa phan h snippets") or ("python missing data snippets"))) or ("locating bug core snippets"))*.