Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau quan doi snippets" » "dau quang doi snippets", "dan quan doi snippets", "dau luan doi snippets", "dau quan tri snippets", "dau quan li 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: (((("dau quan doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau quan doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau quan doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau quan doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.