Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van khuc can snippets" » "van phuc can snippets", "van thuc can snippets", "van phuoc can snippets", "van chuc can snippets", "van khuc ca snippets", "van khuc van 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 khuc can 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 khuc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van khuc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van khuc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.