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