Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
bang suong » bang song, bang tuong, bang phuong
hieu lang » chieu sang, hieu quang, nhieu tang
tung tuan » trung tuan, hung tuan, quang tuan
tuan bang » tuan dang, tuan hoang, thuat bang
suong dan » huong dan, tuong dan, xuong dan
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chieu sach)) - thanh tung tuan bang suong dan ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sach)) - thanh tung tuan bang suong dan ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chieu sach)) - thanh tung tuan bang suong dan ((than cau) or (toan cau))*.