Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do danh dong snippets" » "do anh dong snippets", "do hanh dong snippets", "do dan dong snippets", "do dinh dong snippets", "do sanh dong snippets", "dia danh 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: (((("do danh 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: (((("do danh dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do danh dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do danh dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.