Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong hoi den snippets" » "dong hoi code snippets", "dong hoc den snippets", "dong hoa den snippets", "tong hop den snippets", "dong hoi dien snippets", "dong hoi dan snippets", "dong moi den snippets"
"python using java snippets" » "python using 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 hoi den snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong hoi den snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong hoi den snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hoi den snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.