Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hat toan cao snippets" » "hat toan code snippets", "nhat toan cao snippets", "thuat toan cao snippets", "hach toan cao snippets", "hat toan ban snippets", "hat toan tap 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: (((("hat toan 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: (((("hat toan cao snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hat toan cao snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat toan cao snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.