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