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