Perhaps you should try some spelling variations:
"locating bung code snippets" » "locating bug code snippets", "locating bung code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"doc cao dan snippets" » "hoc cao dan snippets", "do cao dan snippets", "doc dao dan snippets", "doc cao dang snippets", "doc cao danh snippets", "doc cac dan snippets", "doc cao dan 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 dan snippets") or ("python using java snippets"))) or ("locating bung code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc cao dan snippets") OR ("python using java snippets"))) OR ("locating bung code snippets")).
• Removing quotes may allow a broader search: (((( doc cao dan snippets ) or ( python using java snippets ))) or ( locating bung code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc cao dan snippets") or ("python using java snippets"))) or ("locating bung code snippets"))*.