Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim nganh co snippets" » "kim ngan co snippets", "kim thanh co snippets", "kim anh co snippets", "kim nganh cong snippets", "kim nganh hoa snippets", "kim nganh y 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 nganh co 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 nganh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim nganh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim nganh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.