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