Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu lap dong snippets" » "ngu lao dong snippets", "ngu lam dong snippets", "ngu lai dong snippets", "ngu phap 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: (((("ngu lap 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: (((("ngu lap dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu lap dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu lap dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.