Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac khoi le snippets" » "cac thoi le snippets", "cac khoan le snippets", "cach thoi le snippets", "cac hoi le snippets", "cac khoi de snippets", "cac khoi he 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: (((("cac khoi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac khoi le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac khoi le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac khoi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.