Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac danh den snippets" » "sach danh den snippets", "cac doanh den snippets", "cac dan den snippets", "tac danh dien snippets", "tac dan den snippets", "tac danh yen 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: (((("tac danh 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: (((("tac danh den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac danh den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac danh den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.