Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong hieu bo snippets" » "dung hieu bo snippets", "dong trieu bo snippets", "doc hieu bo snippets", "dong hieu so snippets", "dong thieu so 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: (((("python using java snippets") or ("dong hieu bo snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dong hieu bo snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dong hieu bo snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dong hieu bo snippets"))) or ("locating bug code snippets"))*.