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