Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong de co snippets" » "cong de code snippets", "cong da co snippets", "cong ve co snippets", "cong dieu co snippets", "cong ke 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: (((("cong de co snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong de co snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong de co snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong de co snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.