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