Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi hinh he snippets" » "khoa hinh he snippets", "khoi kinh he snippets", "khoi tinh he snippets", "khoi hinh ha snippets", "khoi chinh che 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: (((("khoi hinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi hinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi hinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi hinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.