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