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