Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan su cao snippets" » "dan su code snippets", "dang su cao snippets", "dan cu cao snippets", "dan vu cao snippets", "dan su co 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 cao 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 cao snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan su cao snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan su cao snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.