Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc lang co snippets" » "ngoc lan co snippets", "ngoc lanh co snippets", "ngoc long co snippets", "ngoc lang o snippets", "ngoc nang co snippets", "ngoc tang 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: (((("ngoc lang 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: (((("ngoc lang co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc lang co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc lang co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.