Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap vat hop snippets" » "phap luat hop snippets", "phap phat hop snippets", "phap viet hop snippets", "phap vat hoc snippets", "phap va hop snippets", "phap vat khoa 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 hop 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 hop snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap vat hop snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap vat hop snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.