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