Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hung hoi snippets" » "van dung hoi snippets", "manh hung hoi snippets", "van duong hoi snippets", "van hung khoi snippets", "van hung hoa snippets", "van hung hai 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: (((("van hung hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van hung hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hung hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hung hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.