Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu tan son snippets" » "chu tuan son snippets", "chua tan son snippets", "chu han son snippets", "chu tang son snippets", "chu van son snippets", "chu tay son 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: (((("chu tan son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chu tan son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu tan son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu tan son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.