Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
trung tuan » trung thanh, trung tam, truong thanh
tran tuan » tran xuan, tran quang, tran thanh
hang cong » dang cong, hang nong, bang cong
cong anh » cong danh, dong anh, hong anh
tuan cao » toan cao, juan cao, quang 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 sang) or (chiet tach)) - hanh ((trung tuan) OR (tran tuan)) hang cong anh tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chiet tach)) - hanh ((trung tuan) OR (tran tuan)) hang cong anh tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (chiet tach)) - hanh ((trung tuan) OR (tran tuan)) hang cong anh tuan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chiet tach)) - hanh ((trung tuan) OR (tran tuan)) hang cong anh tuan cao*.