Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung ho den snippets" » "tuong ho den snippets", "trung hoc den snippets", "trung hoa den snippets", "tung hoi den snippets", "tung o den snippets", "tung ho dzenh 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: (((("tung ho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tung ho den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tung ho den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tung ho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.