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