Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huong ban do snippets" » "huong dan do snippets", "huong ben do snippets", "huong lan do snippets", "huong ban co 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: (((("huong ban 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: (((("huong ban do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong ban do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong ban do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.