Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"ca dan so snippets" » "ca dan code snippets", "cac dan so snippets", "ca dao so snippets", "ca dan soc snippets", "ca dan su snippets", "ca dan mo snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"ca dan so snippets\") OR (\"python missing data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( ca dan so snippets ) OR ( python missing data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("ca dan so snippets") OR ("python missing data snippets"))) OR ("locating bug core snippets"))*.