Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong san da snippets" » "cong san da snippets", "dong bang da snippets", "dong von da snippets", "dong san dam snippets", "dong ban da snippets", "dong dan da snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 san da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong san da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong san da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong san da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.