Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua dam cao snippets" » "cua dam cao snippets", "duc dam cao snippets", "xuan dam cao snippets", "dua dam bao snippets", "dua nam cao snippets", "dua dam rao 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: (((("dua dam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua dam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua dam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua dam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.