Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao cong mot snippets" » "cao cong mot snippets", "vao cong mot snippets", "ha cong mot snippets", "hao cong dot snippets", "hao trong mot snippets", "hao cong mong 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 cong mot 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 cong mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao cong mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao cong mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.