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