Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao voi do snippets" » "tao boi do snippets", "tao hoi do snippets", "dao voi do snippets", "tao voi doi snippets", "tao voi ho snippets", "tao toi do 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: (((("tao voi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tao voi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao voi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao voi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.