Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiem va do snippets" » "kien va do snippets", "kiem tra do snippets", "nhiem va do snippets", "kiem va dao snippets", "kiem va doc snippets", "kiem va co 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: (((("kiem va 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: (((("kiem va do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiem va do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem va do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.