Perhaps you should try some spelling variations:
chung cong » nhung cong, chong cong, phung cong
luan chung » luan chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
anh sang » lanh sang, anh nang, anh song
anh dang » anh dong, anh dung, anh danh
anh bang » anh hoang, anh quang, tinh bang
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau

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 xanh - ((((anh sang) or (anh dang))) or (anh bang)) luan chung cong tac nhan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((((anh sang) OR (anh dang))) OR (anh bang)) luan chung cong tac nhan cau*.