Perhaps you should try some spelling variations:
hien khanh » hien hanh, hien nhanh, dien khanh
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, khien canh
hanh han » hanh nhan, hanh phan, hanh san
cong dan » cong san, cong tan, huong dan
dan quan » van quan, ban quan, dan luan
quan cau » quang cao, toan cau, quan ha
han he » han che, hanh he, dan he

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((hien xanh) or (hien khanh))) or (chieu xanh)) - hanh han he thong cong dan quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien xanh) OR (hien khanh))) OR (chieu xanh)) - hanh han he thong cong dan quan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien xanh) or (hien khanh))) or (chieu xanh)) - hanh han he thong cong dan quan cau*.