Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"da tu hoa snippets" » "da tu code snippets", "da tu khoa snippets", "da tu hoai snippets", "da tuy hoa snippets", "dau tu hoa snippets", "dan tu hoa snippets", "dai tu 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: (((("da tu hoa snippets") or ("python missing data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("da tu hoa snippets") OR ("python missing data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( da tu hoa snippets ) or ( python missing data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("da tu hoa snippets") or ("python missing data snippets"))) or ("locating bug core snippets"))*.