Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
dang luong » nang luong, dung luong, hang luong
quan dang » quang dang, quan lang, quan dong
luong vat » luong va, luong van, luong tai
tuan tu » tuan thu, toan tu, than tu
tran tu » tran tuan, tran thuy, tran thi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh trinh quan dang luong vat ((tuan tu) OR (tran tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - hanh trinh quan dang luong vat ((tuan tu) OR (tran tu))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh trinh quan dang luong vat ((tuan tu) OR (tran tu))*.