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