Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phoi khi con snippets" » "phai khi con snippets", "phoi thai con snippets", "doi khi con snippets", "phoi khi cong snippets", "phoi chi con snippets", "phoi khi co 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: (((("phoi khi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phoi khi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phoi khi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phoi khi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.