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