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