Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung cu cac snippets" » "dung cu code snippets", "dung cua cac snippets", "dung co cac snippets", "dung cho cac snippets", "dung cuu cac snippets", "dung cu cao snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing 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: (((("dung cu cac snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cu cac snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung cu cac snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cu cac snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.