Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang quoc vo snippets" » "dang thuoc vo snippets", "han quoc vo snippets", "dang quoc va snippets", "dang duoc vo snippets", "dang quoc 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: (((("dang quoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang quoc vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang quoc vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang quoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.