Perhaps you should try some spelling variations:
"hang cua chieu snippets" » "hang cua code snippets", "hang cua chien snippets", "hang cua hieu snippets", "hang cua dieu snippets", "mang cua chieu snippets", "hang ca chieu snippets", "huong cua chieu 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: (((("hang cua chieu snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang cua chieu snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hang cua chieu snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang cua chieu snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.