Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong bac co snippets" » "luong cac co snippets", "phuong bac co snippets", "luong va co snippets", "luong bac cao snippets", "luong bac bo 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 bac co 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 bac co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong bac co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong bac co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.