Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong moi he snippets" » "phong mo he snippets", "phong mot he snippets", "phong voi he snippets", "phong moi ve snippets", "phong moi ke snippets", "phong moi de 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 moi he 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 moi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong moi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong moi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.