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