Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu cong hoi snippets" » "thu cong hoi snippets", "thi cong hoi snippets", "cuu cong hoi snippets", "khu cong nhoi snippets", "khu cong hoa snippets", "khu cong hai 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 hoi 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 hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu cong hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu cong hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.