Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong su can snippets" » "luong tu can snippets", "luong cua can snippets", "luong chu can snippets", "luong su van snippets", "luong su cao snippets", "luong su han 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 su can 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 su can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong su can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong su can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.