Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh lang » nhanh quang, nhanh thang, nhanh dong
dong trong » duong trong, dung trong, cong trong
trong dang » truong dang, trong dan, trong dong
nhan dang » nhan dan, phan dang, tran dang
chua dong » cua dong, ha dong, huy dong
dang toan » dang tran, dan toan, dung toan
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: hoc ((thieu xanh) OR (chieu xanh)) - ((nhanh lang) or (nhan dang)) chua dong trong dang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - ((nhanh lang) OR (nhan dang)) chua dong trong dang toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - ((nhanh lang) or (nhan dang)) chua dong trong dang toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - ((nhanh lang) or (nhan dang)) chua dong trong dang toan cau*.