Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thi con snippets" » "dang thi con snippets", "tran thi con snippets", "dinh thi con snippets", "dan thi cong snippets", "dan thi mon snippets", "dan chi con 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: (((("dan thi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan thi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.