Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach qua cua snippets" » "bach qua cua snippets", "mach cua cua snippets", "mach tuan cua snippets", "mach quan cua snippets", "mach quang cua snippets", "mach qua quan 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 qua cua 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 qua cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach qua cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach qua cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.