Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham toi do snippets" » "cham hoi do snippets", "cham voi do snippets", "pham thi do snippets", "cham toi doi snippets", "cham toi da snippets", "cham toi di 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: (((("cham toi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham toi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham toi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham toi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.