Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cong ngang » cong nhan, cong quang, cong lang
ngang tuan » quang tuan, hoang tuan, nganh toan
huong cua » dung cua
bang cong » dang cong, bang song, hang cong
tuan chau » tran chau, chuan chau, thanh chau
cua bang » chua bang, cua ban, cua dang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - anh huong cua bang cong ngang tuan chau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - anh huong cua bang cong ngang tuan chau*.