Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"ma cua hoi snippets" » "ma cua code snippets", "ma cua moi snippets", "ca cua hoi snippets", "manh cua hoi snippets", "mang cua hoi snippets"

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

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