Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van thinh he snippets" » "van thinh code snippets", "van thanh he snippets", "van chinh he snippets", "van minh he snippets", "van thinh le snippets", "van trinh he snippets", "van hinh he 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 thinh 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 thinh he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van thinh he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van thinh he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.