Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"doc cao xa snippets" » "hoc cao xa snippets", "do cao xa snippets", "doc dao xa snippets", "doc cao va snippets", "doc cho xa snippets", "doc bao xa snippets", "doc cao xa slippers"

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: (((("doc cao xa snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc cao xa snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( doc cao xa snippets ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc cao xa snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.