Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho muong do snippets" » "cho huong do snippets", "cho tuong do snippets", "cho chuong do snippets", "cho muong o snippets", "cho muong so snippets", "cho cuong do 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 muong 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: (((("cho muong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho muong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho muong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.