Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach van cho snippets" » "mach vanh cho snippets", "bach van cho snippets", "cach van cho snippets", "mach van chi snippets", "mach san cho snippets", "mach van chat 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 van cho 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 van cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach van cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.