Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vuong nam co snippets" » "uong nam co snippets", "phuong nam co snippets", "quang nam co snippets", "vuong nam cao snippets", "vuong nam bo snippets", "vuong nam so 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: (((("vuong nam co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vuong nam co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vuong nam co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuong nam co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.