Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao han lon snippets" » "tao nhan lon snippets", "tao ban lon snippets", "tao van lon snippets", "tao han tong snippets", "tao hai long snippets", "tao phan lan 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 han lon 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 han lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao han lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao han lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.