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