Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"co duong chi snippets" » "co duong code snippets", "co duong thi snippets", "co duong nhi snippets", "co dung chi snippets", "con duong chi snippets", "co xuong chi snippets", "co dong chi 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: (((("co duong chi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co duong chi snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( co duong chi snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co duong chi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.