Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat danh do snippets" » "luat doanh do snippets", "luat dan do snippets", "luat canh do snippets", "luat dang do snippets", "luat danh co snippets", "luat danh di 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: (((("luat danh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luat danh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat danh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat danh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.