Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, trung tam, truong thanh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
tran tuan » tran xuan, tran quang, tran thanh
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than tu » thanh tu, thang tu, phan tu

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)) thong cong ban than tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh ((trung tuan) OR (tran tuan)) thong cong ban than tu*.