Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong hat cu snippets" » "phong phat cu snippets", "phong mat cu snippets", "phong kham cu snippets", "phong hat cua snippets", "phong bat cu snippets", "phong hat ca 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 hat cu 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 hat cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong hat cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong hat cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.