Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu thi cham snippets" » "khu thi hai snippets", "khu toc cham snippets", "khu thi ha snippets", "khau thi cham snippets", "khuc thi cham snippets", "chu thi cham 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: (((("khu thi cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khu thi cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu thi cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu thi cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.