Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong giao co snippets" » "dung giao co snippets", "luong giao co snippets", "thong giao co snippets", "dong gian co snippets", "dong gia co snippets", "dong giau co 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: (((("dong giao 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: (((("dong giao co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong giao co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong giao co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.