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