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