Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tre dan dong snippets" » "tre van dong snippets", "tre dan dung snippets", "tre dao dong snippets", "tre dang dong snippets", "te dan dong snippets", "tre can dong 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: (((("tre dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tre dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tre dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tre dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.