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