Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap hang ca snippets" » "phap khang ca snippets", "phap nang ca snippets", "phap tang ca snippets", "phap hang va snippets", "phap nang cao snippets", "phap hang tai 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: (((("phap hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap hang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap hang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.