Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu cong doc snippets" » "thu cong doc snippets", "thi cong doc snippets", "cuu cong doc snippets", "khu chong doc snippets", "khu cong coc snippets", "khu cong dac 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: (((("khu cong doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khu cong doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu cong doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu cong doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.