Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trung » thanh trung, hanh trang, manh trung
hien xanh » hien hanh, hien nhanh, hien khanh
trung cua » truong cua, trung tuan, trung cap
nhung don » nhung van, nhung bo
dung cong » dung trong
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) OR (chieu xanh)) - hanh trung cua ((nhung don) or (dung cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - hanh trung cua ((nhung don) OR (dung cong)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - hanh trung cua ((nhung don) or (dung cong)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - hanh trung cua ((nhung don) or (dung cong)) dan than cao*.