Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong tu doi snippets" » "cuong thu doi snippets", "luong tu doi snippets", "tuong tu doi snippets", "cuong tu do snippets", "cuong te doi snippets", "cuong tu di 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 tu doi 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 tu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong tu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong tu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.