Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van trinh cad snippets" » "van trinh code snippets", "van thinh cad snippets", "van tinh cad snippets", "dan trinh cad snippets", "van trinh cau snippets", "van trinh cac snippets", "van trinh cam snippets"
"dung java java snippets" » "dung va java 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 trinh cad snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van trinh cad snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van trinh cad snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van trinh cad snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.