Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
hieu xanh » hieu manh, hieu nganh, dieu hanh
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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) or (((chieu xanh) OR (chieu sach)))) - hanh tran tuan thong cong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (((chieu xanh) OR (chieu sach)))) - hanh tran tuan thong cong van tuan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (((chieu xanh) OR (chieu sach)))) - hanh tran tuan thong cong van tuan ban*".