Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu tan doan snippets" » "chu tran doan snippets", "chu tap doan snippets", "chu van doan snippets", "chu tuan doan snippets", "chua tan doan snippets", "chu han doan 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 doan 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 doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu tan doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu tan doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.