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