Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong doi noi snippets" » "vong doi noi snippets", "cong dot noi snippets", "cong goi noi snippets", "cong doi voi snippets", "cong doi moi snippets", "cong loi 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 doi 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 doi noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong doi noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong doi noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.