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