Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc danh du snippets" » "luoc dinh du snippets", "quoc danh du snippets", "luoc canh du snippets", "luoc danh dau snippets", "luoc danh tu 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: (((("luoc danh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luoc danh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc danh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc danh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.