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