Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung danh co snippets" » "tung dan co snippets", "dung danh co snippets", "tung manh co snippets", "tung danh cho snippets", "tung doanh co snippets", "tung 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: (((("tung 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: (((("tung danh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tung danh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tung danh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.