Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lon dan dong snippets" » "lon van dong snippets", "lon dan dung snippets", "lon dao dong snippets", "lan dan dong snippets", "lo dan dong snippets", "loi dan 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: (((("lon dan 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: (((("lon dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lon dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lon dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.