Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
chinh cua » chinh ca, chinh sua, hinh cua
ban cong » bang cong, van cong, phan cong
cong ban » cong bang, cong san, cong tan
than cao » toan cao, than cap, than sao
thai cao » tai cao, thoai cac, thuat cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - hanh chinh cua ban cong ban ((than cao) or (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh chinh cua ban cong ban ((than cao) OR (thai cao)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh chinh cua ban cong ban ((than cao) or (thai cao))*.