Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van trinh cac snippets" » "van trinh code snippets", "van thinh cac snippets", "van tinh cac snippets", "dan trinh cac snippets", "van trinh cau snippets", "van trinh chat snippets", "van trinh chao 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 cac 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 cac snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van trinh cac snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van trinh cac snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.