Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang luat so snippets" » "hang luan so snippets", "hanh luat so snippets", "hang xuat so snippets", "hang thuat so snippets", "hang luat bao 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: (((("hang luat 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: (((("hang luat so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang luat so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang luat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.