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