Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"dan tu ho snippets" » "dan tu code snippets", "danh tu ho snippets", "dan su ho snippets", "ban tu ho snippets", "dan tu hoc snippets", "dan tu hoa snippets", "dan tu hon snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dan tu ho snippets") or ("python missing data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan tu ho snippets") OR ("python missing data snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( dan tu ho snippets ) or ( python missing data snippets ))) or ( locating bug core snippets ))*.