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