Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
trong van » trong cac
tang qua » tang quan, tang cua, tang quy
qua dung » quang dung, su dung, qua song
van quan » van ban
quan cau » quang cao, toan cau, quan ha

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

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