Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat cong cau snippets" » "bat cong cau snippets", "sat cong cau snippets", "vat con cau snippets", "vat cong cu snippets", "vat cong chuc snippets", "vat thong 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: (((("vat cong 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: (((("vat cong cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat cong cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat cong cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.