Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thao cua de snippets" » "thai cua de snippets", "than cua de snippets", "tho cua de snippets", "thao cua te snippets", "thao cua du snippets", "thao cua he 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: (((("thao cua 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: (((("thao cua de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thao cua de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thao cua de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.