Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu cao so snippets" » "khau cao so snippets", "khu bao so snippets", "thuc cao so snippets", "khu cao son snippets", "khu co so snippets", "khu cao su 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: (((("khu cao 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: (((("khu cao so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu cao so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu cao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.