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