Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bug core snippets" » "locating bug code snippets"
"co dan chi snippets" » "co dan code snippets", "co danh chi snippets", "co dan thi snippets", "co van chi snippets", "co ban chi snippets", "ca dan chi snippets", "cao dang chi snippets"

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

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