Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong hoa cu snippets" » "dong hoc cu snippets", "dong co cu snippets", "dong hoa cua snippets", "dong hoa cau snippets", "dong hoa co 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 hoa cu 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 hoa cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hoa cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hoa cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.