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