Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngot dan cho snippets" » "ngon dan cho snippets", "nguoi dan cho snippets", "ngoc dang cho snippets", "ngot danh cho snippets", "ngot san cho snippets", "ngot dac cho 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: (((("ngot dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngot dan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngot dan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngot dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.