Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao hoa cong snippets" » "cao cua cong snippets", "cao va cong snippets", "cao hoa co snippets", "cao hoat cong snippets", "cao khoa cong snippets", "cau hoa cong 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: (((("cao hoa cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao hoa cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao hoa cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao hoa cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.