Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"when van hoe snippets" » "when can hoe snippets", "thien van hoe snippets", "phan van hoe snippets", "when van hoa snippets", "when van hoc snippets", "when van hieu 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: (((("when van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("when van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.