Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong dan da snippets" » "dong dan code snippets", "dong danh da snippets", "duong dan da snippets", "dong san da snippets", "dong dan dat snippets", "dong dan ca snippets", "dong dan va 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 dan da 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 dan da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong dan da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dan da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.