Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang cua dot snippets" » "mang cua dot snippets", "hang ca dot snippets", "huong cua dot snippets", "hang cua mot snippets", "hang cua bot snippets", "hang cua dong 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 cua dot 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 cua dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang cua dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang cua dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.