Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong vu cac snippets" » "cuong vo cac snippets", "cuong ve cac snippets", "cong vu cac snippets", "cuong va cac snippets", "cuong tu cac 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 vu cac 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 vu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong vu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong vu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.