Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac hieu cac snippets" » "cac chieu cac snippets", "cao hieu cac snippets", "cac kieu cac snippets", "cac hieu luc snippets", "cac hieu va snippets", "cac hieu van 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 hieu 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: (((("cac hieu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac hieu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac hieu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.