Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau quang de snippets" » "dat quang de snippets", "dang quang de snippets", "doan quang de snippets", "dau quang le snippets", "dau quang d snippets", "dau quang do 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 quang de 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 quang de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau quang de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau quang de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.