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