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