Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tinh dan den snippets" » "trinh dan den snippets", "tinh da den snippets", "binh dan den snippets", "tinh ban den snippets", "tinh van den snippets", "tinh dan dung 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: (((("tinh dan 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: (((("tinh dan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh dan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.