Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao luan moi snippets" » "dao luan moi snippets", "tang luan moi snippets", "tao thuan moi snippets", "tao luat moi snippets", "tao luan doi snippets", "tao luan gioi 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 luan moi 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 luan moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao luan moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao luan moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.