Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet gan con snippets" » "viet van con snippets", "viem gan con snippets", "viet gap con snippets", "viet gian con snippets", "viet ga con snippets", "viet van cong 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: (((("viet gan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet gan con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet gan con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet gan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.