Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan cho du snippets" » "danh cho du snippets", "san cho du snippets", "dac cho du snippets", "dan cho cu snippets", "dan cho tu snippets", "dan cho duoc 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: (((("dan cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan cho du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cho du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.