Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong cuon co snippets" » "dong duong co snippets", "dong huong co snippets", "dang cuong co snippets", "dong con co snippets", "dong cuoi co snippets", "dong cuong vo 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 cuon co 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 cuon co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cuon co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cuon co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.