Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nha cao cong snippets" » "nha cac cong snippets", "nha cao dang snippets", "nha cua cong snippets", "nhan cao cong snippets", "nhat cao 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: (((("nha cao 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: (((("nha cao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nha cao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nha cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.