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