Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong dan ve snippets" » "huong dan ve snippets", "luong dao ve snippets", "luong van ve snippets", "luong ban ve snippets", "luong dan va snippets", "luong dan viet 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 dan ve 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 dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.