Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong ngu doi snippets" » "song ngu doi snippets", "cong ngo doi snippets", "nong ngu doi snippets", "cong neu doi snippets", "cong ngu noi snippets", "cong nu doi 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: (((("cong ngu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong ngu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong ngu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong ngu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.