Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
bang cong » dang cong, bang song, hang cong
danh toan » anh toan, dan toan, dang toan
manh toan » thanh toan, anh tuan, tinh toan
cua bang » chua bang, cua ban, cua dang

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 xanh) or (hieu quang)) - hanh trung cua bang cong ((danh toan) OR (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu quang)) - hanh trung cua bang cong ((danh toan) OR (manh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (hieu quang)) - hanh trung cua bang cong ((danh toan) OR (manh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hieu quang)) - hanh trung cua bang cong ((danh toan) OR (manh toan)) cao*.