Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho can nghe snippets" » "cho van nghe snippets", "cho cap nghe snippets", "cho cac nghe snippets", "cho phan nghe snippets", "cho cong nghe 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: (((("cho can nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho can nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho can nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho can nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.