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