Perhaps you should try some spelling variations:
hanh trong » hanh trang, anh trong, hinh trong
chieu sang » chieu sach, chieu xanh, nhieu tang
quan duong » tuan duong, quan dong, qua duong
hieu lang » hieu quang, nhieu tang, hieu van
quan dung » quang dung, qua dung, quan dong
trong van » trong cac
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau

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 (hieu lang)) - hanh trong ((quan dung) OR (quan duong)) trong van thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu lang)) - hanh trong ((quan dung) OR (quan duong)) trong van thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (hieu lang)) - hanh trong ((quan dung) OR (quan duong)) trong van thanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu lang)) - hanh trong ((quan dung) OR (quan duong)) trong van thanh cau*.