Perhaps you should try some spelling variations:
"trong duoc chat snippets" » "trong duoc code snippets", "trong cuoc chat snippets", "trong nuoc chat snippets", "trong doi chat snippets", "trong doc chat snippets", "trong duoc pham snippets", "trong hoc chat snippets"
"locating bug core snippets" » "locating bug code 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 duoc chat 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 duoc chat snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong duoc chat snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong duoc chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.