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