Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luu thi chap snippets" » "luu thi phap snippets", "luu thi cham snippets", "luu thi cap snippets", "luc thi chap snippets", "luan 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: (((("luu 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: (((("luu thi chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luu thi chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luu thi chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.