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