Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van cho ho snippets" » "van chi ho snippets", "san cho ho snippets", "van chat ho snippets", "van cho hoc snippets", "van cho hoa snippets", "van pho ho 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 cho ho 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 cho ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van cho ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van cho ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.