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