Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trong tap can snippets" » "trong tap code snippets", "trong thap can snippets", "tong tap can snippets", "trong tan can snippets", "trong tap van snippets", "trong tap cac snippets", "trong tac can 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: (((("trong tap can snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong tap can snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong tap can snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong tap can snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.