Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan trong do snippets" » "ban trong do snippets", "dat trong do snippets", "dao trong do snippets", "dan trong doi snippets", "dan trong dao snippets", "dan trong co 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 trong do 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 trong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan trong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan trong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.