Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao cao dong snippets" » "tao cao dang snippets", "tao lao dong snippets", "tao cao cong snippets", "bao cao dong snippets", "toan cao dong 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 cao dong 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 cao dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao cao dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao cao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.