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