Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hat noi snippets" » "cong nhat noi snippets", "cong chat noi snippets", "cong ha noi snippets", "cong hat doi snippets", "cong hay noi 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 hat noi 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 hat noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hat noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hat noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.