Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tinh sach do snippets" » "tinh cach do snippets", "sinh sach do snippets", "tinh mach do snippets", "tinh sach dao snippets", "tinh sach doi snippets", "tinh sach de 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: (((("tinh sach 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: (((("tinh sach do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh sach do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh sach do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.