Perhaps you should try some spelling variations:
"trong gian cham snippets" » "trong gian code snippets", "trong giang cham snippets", "trong giao cham snippets", "trong gia cham snippets", "trong gian cua snippets", "trong gian cac snippets", "trong gian ha 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 gian cham 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 gian cham snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong gian cham snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong gian cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.