Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan chuan do snippets" » "doan chuan do snippets", "dan chan do snippets", "dong chuan do snippets", "dan chuan dao snippets", "dan chuan co snippets", "dan chuan doan 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: (((("dan chuan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan chuan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan chuan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan chuan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.