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