Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuan tu choi snippets" » "tuan thu choi snippets", "tran tu choi snippets", "toan tu choi snippets", "tuan su choi snippets", "tuan tu chi snippets", "tuan tu chon 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: (((("tuan tu 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: (((("tuan tu choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuan tu choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuan tu choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.