Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi thi cham snippets" » "khi thi hai snippets", "khi toc cham snippets", "khi thi ha snippets", "khi thai cham snippets", "chi thi cham snippets", "khe 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: (((("khi 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: (((("khi thi cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi thi cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi thi cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.