Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung cua chu snippets" » "dung cua code snippets", "dung luan chu snippets", "dung cho chu snippets", "dung sua chua 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 cua chu 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 cua chu snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung cua chu snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cua chu snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.