Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong danh de snippets" » "dong danh code snippets", "dong doanh de snippets", "dong anh de snippets", "cong danh de snippets", "dong hanh de snippets", "dong dan de snippets", "dong dang de 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 danh de 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 danh de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong danh de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong danh de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.