Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan van choi snippets" » "dan van chi snippets", "dan van cho snippets", "dan san choi snippets", "dang van choi snippets", "doan van choi snippets", "dao van 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: (((("dan van 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: (((("dan van choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan van choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan van choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.