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