Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"troi van den snippets" » "tri van den snippets", "trong van den snippets", "thoai van den snippets", "troi van de snippets", "troi van der snippets", "troi ban den 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: (((("troi van 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: (((("troi van den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( troi van den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("troi van den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.