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