Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"cu tu ban snippets" » "cu thu ban snippets", "cu te ban snippets", "cau tu ban snippets", "chu tu ban snippets", "cua tu ban 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: "((((\"cu tu ban snippets\") OR (\"python missing data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( cu tu ban snippets ) OR ( python missing data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cu tu ban snippets") OR ("python missing data snippets"))) OR ("locating bug core snippets"))*.