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