Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang quan co snippets" » "hoang quan co snippets", "hang luan co snippets", "nang quan co snippets", "hang quan so snippets", "hang quan ao snippets", "hang quan ho 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 quan co 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 quan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang quan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang quan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.