Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach tao cau snippets" » "mach cao cau snippets", "mach tuan cau snippets", "mach lac cau snippets", "mach tao cu snippets", "mach tao cao snippets", "mach tao sau 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: (((("mach tao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mach tao cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach tao cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach tao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.