Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kien chi cac snippets" » "trien chi cac snippets", "hieu chi cac snippets", "ke chi cac snippets", "kien cho cac snippets", "kien chi cuc snippets", "kien chon cac 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: (((("kien chi cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kien chi cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kien chi cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kien chi cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.