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