Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
chinh ca » chinh ta, chinh va, chinh tai
ca nhung » cua nhung, cam nhung, va nhung
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh
doi chi » doi khi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (doi chi)) xanh - hanh chinh ca nhung cong ((dan toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) xanh - hanh chinh ca nhung cong ((dan toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (doi chi)) xanh - hanh chinh ca nhung cong ((dan toan) or (van toan)) cau*.