Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van han lon snippets" » "van han code snippets", "van hanh lon snippets", "van phan lon snippets", "van nhan lon snippets", "van han tong snippets", "van hai long snippets", "van phan lan snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van han lon 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 han lon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van han lon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van han lon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.