Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((hieu manh) or (thien thanh))) or (chieu sang)) - hanh trinh cua dong cong tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (thien thanh))) OR (chieu sang)) - hanh trinh cua dong cong tan tran cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) or (thien thanh))) or (chieu sang)) - hanh trinh cua dong cong tan tran cau*.