Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoat van chi snippets" » "hoa van chi snippets", "hat van chi snippets", "hoang van chi snippets", "hoat van chien snippets", "hoat luan chi snippets", "hoat van chat 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: (((("hoat van chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoat van chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoat van chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoat van chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.