Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap ban toi snippets" » "phap han toi snippets", "pha ban toi snippets", "phap van toi snippets", "phap ban thoi snippets", "phap ban moi snippets", "phap ban thi 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 ban toi 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 ban toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap ban toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap ban toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.