Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan su hoai snippets" » "dan su code snippets", "dan su hai snippets", "dan su hoan snippets", "dan su hoa snippets", "dang su hoai 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: (((("dan su hoai snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan su hoai snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan su hoai snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan su hoai snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.