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