Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu hieu ca snippets" » "phu nhieu ca snippets", "nhu hieu ca snippets", "thuc hieu ca snippets", "phu hieu cac snippets", "phu hieu cua snippets", "phu hieu va 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: (((("phu hieu ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phu hieu ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu hieu ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu hieu ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.