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