Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, trung tam, truong thanh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
tran tuan » tran xuan, tran quang, tran thanh
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan lap

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 sang - hanh ((trung tuan) OR (tran tuan)) nhung cong dan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh ((trung tuan) OR (tran tuan)) nhung cong dan ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - hanh ((trung tuan) OR (tran tuan)) nhung cong dan ((phan cau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - hanh ((trung tuan) OR (tran tuan)) nhung cong dan ((phan cau) or (phan tu))*.