Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro va doan snippets" » "tro va doanh snippets", "tro van doan snippets", "tro va dan snippets", "tao va doan snippets", "tho va doan snippets", "tro ba 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: (((("tro va 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: (((("tro va doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro va doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro va doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.