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