Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong mo cao snippets" » "phong so cao snippets", "thong mo cao snippets", "phong cho cao snippets", "phong o cao snippets", "phong do cao snippets", "phong mo cho 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: (((("phong mo cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phong mo cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong mo cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong mo cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.