Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham van chi snippets" » "pham van chi snippets", "nham van chi snippets", "ha van chi snippets", "ham van chien snippets", "ham luan chi snippets", "ham 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: (((("ham 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: (((("ham van chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham van chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham van chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.