Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang duoc vo snippets" » "dang quoc vo snippets", "dang duc vo snippets", "dong duoc vo snippets", "dang duoc va snippets", "dang duoc co snippets", "dang duoc 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: (((("dang duoc 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 duoc vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang duoc vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang duoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.