Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len toi do snippets" » "len troi do snippets", "len thoi do snippets", "len ngoi do snippets", "len toi doi snippets", "len toi da snippets", "len toi di 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: (((("len toi 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: (((("len toi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len toi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len toi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.