Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu cua mo snippets" » "ngu ca mo snippets", "ngu cu mo snippets", "ngu cua mot snippets", "ngu cua moi snippets", "ngu cua bo 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: (((("ngu cua mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu cua mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu cua mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu cua mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.