Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viec co cac snippets" » "viec cho cac snippets", "viec so cac snippets", "viet co cac snippets", "viec ca cac snippets", "viec co 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: (((("viec co 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: (((("viec co cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viec co cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viec co cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.