Perhaps you should try some spelling variations:
"co can chien snippets" » "co can code snippets", "co van chien snippets", "co cac chien snippets", "co tran chien snippets", "cho can chien snippets", "co ban chien snippets", "co dan chien snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

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