Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong va den snippets" » "thong cua den snippets", "truong va den snippets", "thong qua den snippets", "thong va dien snippets", "thong van den snippets", "thong va de 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: (((("thong va 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: (((("thong va den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong va den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong va den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.