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