Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung vi ve snippets" » "dung va ve snippets", "dung viet ve snippets", "dung tai ve snippets", "dung gi ve snippets", "dung ve ve 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: (((("dung vi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vi ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vi ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.