Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phat lam cua snippets" » "phat am cua snippets", "phap lam cua snippets", "nhat lam cua snippets", "phat nam cua snippets", "phat lam chat 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: (((("phat lam cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phat lam cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phat lam cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phat lam cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.