Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bugs code snippets" » "locating bug code snippets"
"dan ve ho snippets" » "ban ve ho snippets", "dan va ho snippets", "dan viet ho snippets", "dan ve hop snippets", "dan ve cho snippets", "dan ve hoa 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 ve ho snippets") or ("python missing data snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan ve ho snippets") OR ("python missing data snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dan ve ho snippets ) or ( python missing data snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan ve ho snippets") or ("python missing data snippets"))) or ("locating bugs code snippets"))*.