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