Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hanh he snippets" » "van hanh code snippets", "van thanh he snippets", "ban hanh he snippets", "van anh he snippets", "van hanh che snippets", "van hanh ve snippets", "van hanh de 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van hanh he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hanh he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.