Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong ca chi snippets" » "phong cac chi snippets", "phong cai chi snippets", "phong va chi snippets", "phong a chi snippets", "phong cu chi snippets", "phong la chi 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 ca chi 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 ca chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong ca chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong ca chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.