Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang van hoe snippets" » "hoang van hoe snippets", "hang va hoe snippets", "dang van hoe snippets", "hang van hoa snippets", "hang van hoc snippets", "hang van hieu 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 van hoe 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 van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.