Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thieu xanh » hieu manh, thien anh, thien danh
hanh trinh » canh tranh, hanh chinh
hien hanh » dieu hanh
dang cong » dung cong
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
va dang » van dang, va nang, va lang

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

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