Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao ban choi snippets" » "nao bai choi snippets", "nao ban chi snippets", "nao ban thoi snippets", "tao ban choi snippets", "sao ban choi snippets", "lao ban choi 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: (((("nao ban choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao ban choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao ban choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao ban choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.