Perhaps you should try some spelling variations:
dung cuong » dung cong, dung luong, dang cuong
chieu xanh » chieu sach, chieu sang, chieu tinh
tieu xanh » tieu danh, dieu hanh, tien anh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh cua » trinh cua, sinh cua, tinh chat
cua dung » cua dang, cua dong, qua dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu xanh) or (chieu xanh)) - hanh tinh cua dung cuong ((bai toan) OR (bai tap)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (chieu xanh)) - hanh tinh cua dung cuong ((bai toan) OR (bai tap)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) or (chieu xanh)) - hanh tinh cua dung cuong ((bai toan) OR (bai tap)) cao".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (chieu xanh)) - hanh tinh cua dung cuong ((bai toan) OR (bai tap)) cao*.