Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phuc sen can snippets" » "phuc se can snippets", "phu yen can snippets", "phu san can snippets", "phuc sen tan snippets", "phuc ben canh snippets", "phuc vien can 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: (((("phuc sen can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phuc sen can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phuc sen can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phuc sen can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.