Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi cap can snippets" » "khoa cap can snippets", "khoi can can snippets", "khoi bay can snippets", "khoi cap han snippets", "khoi cap van snippets", "khoi tap can 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 cap can 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 cap can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi cap can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi cap can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.