Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac khoi cu snippets" » "cac thoi cu snippets", "cac khoan cu snippets", "cach thoi cu snippets", "cac khoi cua snippets", "cac khoi su snippets", "cac khi cu 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 cu 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 cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac khoi cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac khoi cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.