Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua nha o2 snippets" » "cua nhan o2 snippets", "cua ngan o2 snippets", "cua nha o snippets", "cua nha a2 snippets", "cua nha g2 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: (((("cua nha o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua nha o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua nha o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua nha o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.