Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"de phan nghe snippets" » "de nhan nghe snippets", "de pham nghe snippets", "de phan nghien snippets", "d phan nghe snippets", "de phap nghe snippets", "de phat nghe 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: (((("de phan nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("de phan nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( de phan nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("de phan nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.