Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bai thi chap snippets" » "bai thi phap snippets", "bai thi cham snippets", "bai thi cap snippets", "bui thi chap snippets", "ban thi chap snippets", "tai thi chap 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: (((("bai thi chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bai thi chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bai thi chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bai thi chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.