Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang li cac snippets" » "hoang le cac snippets", "hong li cac snippets", "hoang ly cac snippets", "hoang li ca snippets", "hoang loi cach 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 li cac 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 li cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang li cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang li cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.